INFORMATION TECHNOLOGY FOR MANAGERS  PRACTICAL FILE  Submitted for partial fulfillment for the award of  the Degree of :- 

2011-2013

Under the supervision of   MS Ranjeeta Popli 

submitted by: MANISH SINGH ENROLLMENT NO. – 01219103912

GITARATTAN INTERNATIONAL BUSINESS SCHOOL ( Affiliated to Guru Gobind Singh Indraprastha University )

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Madhuban Chowk, ROHINI, DELHI - 110085

CONTENTS: Topics No.

Page

1. MS-DOS 2. HTML 3. SPREADSHEETS 4. SQL

03 - 09 10 - 19 20 - 38 39 - 48

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MS-DOS

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Disk operating System (DOS) DOS was developed by Microsoft primarily as a single user operating system working on Personal Computers. From 1981 till now many versions starting from version 1.0 till 6.2 have been released. Each successive version had its enhancements aimed at improving the management of the computer resources available to the users.  COMPONENTS OF MS DOS: • • • •

BOOT RECORD MSDOS.SYST IO.SYS COMMAND.COM

BOOTING: Process that starts up a computer system is called booting. It searches for operating system and when located loads it into the main memory. TYPES OF BOOTING: 1. COLD BOOTING :It is done by turning on the

computer. 2. WARM BOOTING : It is performed by pressing CTRL+ALT+DEL keys simultaneously.

DOS Commands:

A DOS command helps you to give instruction to the operating system in Character User Interface (CUI) environment. Using DOS commands, you can perform various tasks, such as creating and managing files and folders and monitoring your system resources. To create and manage files and folders, perform the following steps: 1. Click the Start button, and then select Run. 2. In the Run dialog box, type cmd in the Run box.

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3. Click the OK button.

The Command Prompt window is displayed.

In the Command Prompt window, the command is given after the command prompt and the Enter key is pressed to execute the command. As the drive displayed is the user directory, change the drive to D: drive by giving following command at the command prompt. C:\Users\user>D:  CATEGORIES OR TYPES OF DOS COMMANDS: 1. INTERNAL COMMANDS: Such commands are

automatically loaded into the computer’s memory during the  booting process. They are executable immediately after getting the dos prompt. 2. EXTERNAL COMMANDS: these commands are meant for 

special purpose. They are found on hard disk or floppy disk. They are loaded into the memory only when called.

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1. INTERN INTERNAL AL COMMA COMMANDS NDS::  VER:

VER command displays the version or release number of the O/S. The version number indicates which edition of O/S you are working on. SYNTAX: VER< enter> EXAMPLE: C:\> VER   VOL:

It is used to display volume label and serial number of the current drive. SYNTAX: VOL [drive] EXAMPLE: C:\>VOL  DATE:

It is used to display the current system date and prompt for  entering new date. SYNTAX: DATE< enter> EXAMPLE: C:\>DATE  TIME:

Displays the current system time and prompt for entering new time. SYNTAX: TIME

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EXAMPLE: C:\> TIME

 CLS:

It clears the cluster screen. SYNTAX: CLS< enter> EXAMPLE: C:\> CLS

 TREE:

It is used to display the directory structure of a specified directory graphically. SYNTAX: TREE[drive:][path][/f] TREE[drive:][path][/f] [/f]: displays the names of the files in each directory.

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Directories:

In the DOS, each disk is organized into directories. Each Directory holds file. The default directory is the Root Directory and contains the minimum DOS files. The Root Directory cannot show more than 132 files in its directory listing. 

Make Directory:

MD or MKDIR command is used to make directory. Syntax: MD [drive:] [path] [directory name] Or  7

MKDIR [drive:] [path] [directory name]  Example: To create a new directory names Tim under C: drive, give following command: C:\>MD Tim 

or

C:\>MKDIR Tim

Change Directory:

You can change your working directory by issuing the CD command. Syntax: CD [drive:] [directory name]

 Example: To make Tim as current directory, give following command: C:\>CD Tim

 PATH:

This command defines a list of directories DOS searches for external commands. SYNTAX: PATH( Displays the current search path)



Deleting Directory:

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RD command is used to remove a directory.

Syntax: RD [drive:] [path]

Examples: To remove Tim directory from the C: drive, give the following command: C:\>RD Tim  Displaying Contents of a Directory

DIR command is used to display the contents of the directory.

Syntax: DIR [drive:] [path] [/option] /option stand for various options that can be used with DIR command which are displayed in the following table: Option /p /w /s o



Description Pause after each screenful Uses wide list format Also look in subdirectories

Creating text File:

COPY CON command is used to create a text file.

Syntax: COPY CON [filename] After the command is given at the command prompt, the cursor goes to the next line. Write the text and press Clt-Z key together to save the contents in the file. Then, press key. Example:

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To create a file client.txt under the current folder Tim, give the command: C:\Tim>copy con Client.txt  Now, write  Hi,  How are you? Then press Clt-Z and then, Enter Key.

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

Displaying the Contents of a File:

TYPE command is used to display the contents of a file.

Syntax: Type [drive:] [path] [filename]

 Example: C:\Tim>type Client.txt

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

Renaming File:

REN command is used to change the name of a file.

Syntax: REN [drive:] [path] [file name] [new filename]  Example: To change the name of the file Client.txt to Client1.txt, give following command: C:\Tim>REN Client.txt Client1.txt

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

Copying Files:

COPY command is used to copy one or more files to an alternate location.

Syntax: COPY [source] [destination] Source – Specifies the path of the file or files to be copied.  Destination – Specifies the path of the destination directory. Example: To

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copy Client1.txt from the current Tim directory to Obama directory, give following command: C:\Tim>copy Client1.txt C:\Obama

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

Deleting Files:

DEL command is used to delete file or files from the disk.

Syntax: DEL [drive:] [path] [filename]  Example: To delete Client1.txt from the Tim folder, give following command: C:\Tim>DEL Client1.txt

2. 

EXTERNAL COMMANDS:

Moving Files:

MOVE command is used to move a file or files from one location to another location.

SYNTAX: MOVE [drive:] [source] [drive:] [target] 12

 EXAPMLE: To move case1.txt file from directory Tim to the directory Obama, give following command: C:\Tim>move Case1.txt C:\Obama  FC:

FC stands for file compare. It is used to compare two files or two sets of  files. This command differentiates between the files and display the difference. SYNTAX: FC [/a][/b][/c][/l][/n] /a: displays only first and the last line of each group /b: compares the files in library mode /c: ignores the case of letters /l: compares the files in text mode /n: displays the line numbers for the lines that are different. EXAMPLE: FCfirst.txt



second.txt\n and then press

XCOPY:

This command is faster than copy command and allows you to copy entire directories including all the sub directories and files to destination. SYNTAX: XCOPY Source[target][/y][-y][/p][/e] /-y: prompts before copying over existing files. /y: overwrites existing files before promting. /p: ask before copying each file. /e: copying empty directory also. /s: copying subfolders. EXAMPLE: XCOPY C:\SAMS D:\SAMS/S/E  DOSKEY:

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DOS can remember only the last command you had entered. In order to make dos remember all the commands you enter you will have to load a DOSKEY utility.

SYNTAX: DOSKEY and press Display message on the screen. DOSKEY installed. Note: To display all the commands from the history list on the screen.

EXAMPLE: DOSKEY/History or/h .  ATTRIB:

The attrib of a file indicates whether it is is a: i. ii. iii. iv.

Read only file Archive file Hidden file System file

Thus with the ATTRIB command you can check the attributes of a file. SYNTAX: ATTRIB [+r][+a][+h][/+s][filename] +r: read only attribute +a: archive attribute +h: hidden attribute +s: system attribute EXAMPLE: C:\> ATTRIB my.txt +R 

 DELTREE:

This command is used for deleting an entire directory whether in that directory contains files or subdirectories and also it will delete hidden files.

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SYNTAX: DELTREE [drive:][path] directories[/y]

EXAMPLE: C:\>DELTREE my.txt

 BATCH FILES:

It is a collection of dos commands to perform a certain task. A BATCH FILE is nothing but sequence of operations step by step.

SYNTAX: C:\> COPY CON A.bat Here, CON means console that is keyboard, A the file name and .bat is the extension of batch file. It is compulsory that a batch file must have extension . BAT.

HTML 15

Introduction Hypertext markup language (HTML) is a markup language that web  browsers use to interpret and compose text, images and other material into visual or audible web pages. It is developed by World Wide Web consortium (W3C). It is not a programming Language. HTML is the set of markup tags. Extension of HTML files is .htm or .html.

HTML Tags

HTML markup tags are usually called HTML tags •

•

•

•

HTML tags are keywords surrounded by angle brackets like HTML tags normally come in pairs like and The first tag in a pair is the start tag, the second tag is the end tag Start and end tags are also called opening tags and closing tags

HTML Element Syntax •

•

•

•

An HTML element starts with a start tag / opening tag An HTML element ends with an end tag / closing tag The element content is everything between the start and the end tag Some HTML elements have empty content

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•

•

Empty elements are closed in the start tag Most HTML elements can have attributes

HTML Attributes •

•

•

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HTML elements can have attributes Attributes provide additional information about an element Attributes are always specified in the start tag Attributes come in name/value pairs like: name="value"

Getting started with Examples. HTML Headings Headings are defined with the

to

tags.

defines the most important heading.

defines the least important heading.

Save this file in [filename].html. [ filename].html.

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HTML Lines

The

---

tag creates a horizontal line in an HTML page.

Output

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HTML Text Formatting tag is used for  bold the text. tag is used for italic for italic the text. tag is used for underline the text.

Output 19

HTML Fonts

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Output

HTML Style

Output

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HTML Links is used for HTML link.

Output

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HTML Images

Output

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HTML Tables A table is divided into rows (with the tag), and each row is divided into data cells (with the tag). td stands for "table data," and holds the content of a data cell. A tag can contain text, links, images, lists, forms, other tables, etc.

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Output

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SPREADSHEETS

INTRODUCTION  Spreadsheet applications (sometimes referred to simply as spreadsheets as spreadsheets)) are computer  programs  programs that let you create and manipulate spreadsheets

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electronically. In a spreadsheet application, application, each value sits in a cell. You can define what type of data of data is in each cell and how different cells depend on one another. The relationships between cells are called  formulas, and the names of the cells are called labels. Some examples of spreadsheet usage: •

•

•

•

Spreadsheets act like a calculator by automatically doing calculations. Spreadsheets are used for tracking personal investments,  budgeting, invoices, inventory tracking, statistical statistical analysis, numerical modeling, address books, telephone books, printing labels, etc. Spreadsheets are used in almost every profession to calculate, graph, analyze and store information. Spreadsheets are used for What-if calculations. Change one number in a spreadsheet and all the calculations in a large spreadsheet will re-calculate, will automatically change.

There are a number of spreadsheet on the market, Lotus 1-2-3 and Excel  being among the most famous. The more more powerful spreadsheet applications support graphics features that enable you to produce charts and graphs from the data. Here we will discuss about MS-EXCEL. Microsoft Excel is a proprietary a proprietary commercial spreadsheet application written and distributed by Microsoft for Microsoft for Microsoft Windows and Mac OS. Excel forms part of Microsoft of Microsoft Office. Office. The current versions are 2010 for  Microsoft Windows and 2011 for Mac for Mac OS X. X.

Step of Opening Ms-Excel Start – All Programs - Microsoft Office – Microsoft Office Excel Or Start – Run – type excel and press OK  The first page of Microsoft Excel 2007

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Worksheets

Microsoft Excel consists of worksheets of worksheets.. Each worksheet contains columns and rows. The columns are lettered A to Z and then continuing with AA, AB, AC and so on; the rows are numbered 1 to 1,048,576.

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The Formula Bar 

If the Formula bar is turned on, the cell address of the cell you are in displays in the Name box which is located on the left side of the Formula  bar. Cell entries display on the right side side of the Formula bar.

The Status Bar 

The Status bar appears at the very bottom of the Excel window and  provides such information as the sum, average, minimum, minimum, and maximum value of selected numbers. You can change what displays on the Status  bar by right-clicking on the Status bar and selecting the options you want from the Customize Status Bar menu. You click a menu item to select it.

Excel Formulas

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A formula is a set of mathematical instructions that can be used in Excel to perform calculations. Formals are started in the the formula box with an = sign.

There are many elements to and excel formula. References: The cell or range of cells that you want to use in your  calculation Operators: Symbols (+, -, *, /, etc.) that specify the calculation to be  performed Constants: Numbers or text values that do not change Functions: Predefined formulas in Excel

To create a basic formula in Excel: •

•

•

Select the cell for the formula Type = (the equal sign) and the formula Click Enter

Calculate with Functions A function is a built in formula in Excel. A function has a name and arguments (the mathematical function) in parentheses.

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Common functions in Excel: Sum: Adds all cells in the argument Average: Calculates the average of the cells in the argument argument Min: Finds the the minimum minimum value value Max: Finds the maximum value Count: Finds the number of cells cells that contain a numerical value within within a range of the argument

To calculate a function: •

•

•

•

•

•

Click the cell where you want the function applied Click the Insert Function button Choose the function Click OK 

Complete the Number 1 box with the first cell in the range that you want calculated Complete the Number 2 box with the last cell in the range that you want calculated

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Function Library The function library is a large group of functions on the Formula Tab of  the Ribbon. These functions include:

AutoSum: Easily calculates the sum of a range Recently Used: All recently used functions Financial: Accrued interest, cash flow return rates and additional financial functions Logical: And, If, True, False, etc. Text: Text based functions Date & Time : Functions calculated on date and time Math & Trig: Mathematical Functions

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Sort and Filter Sorting and Filtering allow you to manipulate data in a worksheet based on given set of criteria.

Basic Sorts To execute a basic descending or ascending sort based on one column: •

•

•

Highlight the cells that will be sorted Click the Sort & Filter button on the Home tab Click the Sort Ascending (A-Z) button or Sort Descending (Z-A)  button

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Custom Sorts To sort on the basis of more than one column: •

•

•

•

•

Click the Sort & Filter button on the Home tab Choose which column you want to sort by first Click Add Level Choose the next column you want to sort Click OK 

Filtering

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Filtering allows you to display only data that meets certain criteria. To filter: •

•

•

•

•

•

Click the column or columns that contain the data you wish to filter  On the Home tab, click on Sort & Filter Click  Filter button Click the Arrow at the bottom of the first cell Click the Text Filter Click the Words you wish to Filter 

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•

•

To clear the filter click the Sort & Filter button Click Clear

Charts Charts allow you to present information contained in the worksheet in a graphic format. Excel offers many types of charts including: Column, Line, Pie, Bar, Bar, Area, Scatter and more. more. To view the charts available click  the Insert Tab on the Ribbon. Create a Chart To create a chart: •

•

•

Select the cells that contain the data you want to use in the chart Click the Insert tab on the Ribbon Click the type of Chart you want to create

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Modify a Chart Once you have created a chart you can do several things to modify the chart.

To move the chart: •

•

•

Click the Chart and Drag it another location on the same worksheet, or  Click the Move Chart button on the Design tab Choose the desired location (either a new sheet or a current sheet in the workbook)

To change the data included in the chart: •

•

Click the Chart Click the Select Data button on the Design tab

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To reverse which data are displayed in the rows and columns: •

•

Click the Chart Click the Switch Row/Column button on the Design tab

To modify the labels and titles: •

•

•

Click the Chart On the Layout tab, click the Chart Title or the Data Labels  button Change the Title and click Enter

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Chart Tools The Chart Tools appear on the Ribbon when you click on the chart. The tools are located located on three tabs: Design, Layout, and Format.

Within the Design tab you can control the chart type, layout, styles, and location.

Within the Layout tab you can control inserting pictures, shapes and text  boxes, labels, axes, background, and analysis.

Within the Format tab you can modify shape styles, word styles and size of the chart.

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Copy a Chart to Word •

•

•

•

Select the chart Click Copy on the Home tab Go to the Word document where you want the chart located Click Paste on the Home tab

Pivot Table An Excel An Excel pivot table is a special kind of table that assembles and summarizes information from a designated data source. That data source can be an external file or it can be a selection of cells in a worksheet. When creating the pivot table, you specify what fields need to appear and how to organize the data in the table. Once created, you can change the way that the data is summarized to give you a different view of your  information, and it is this feature that puts the “pivot” in pivot table.

In this example the source data contains information about property insurance policies. Each row has the details about one insurance policy, such as the region, state, construction type and the value of the insured  property.

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Creating a Simple Pivot Table After your source data is prepared, you can create a pivot table. We'll create a pivot table that shows the total insured value in each of the four  regions where we sell insurance. 1. Select Select any any cell cell in the the source source data data table table.. 2. On the the Ribbo Ribbon, n, click click the the Insert Insert tab. tab. 3. In the Tabl Tables es group, group, click click Pivot PivotTab Table. le.

4. In the Create Create PivotTa PivotTable ble dialog dialog box, the address address of your your source data table should be automatically entered in the Table/Range box. If not, click on the worksheet, and select the range manually.

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5. Next, select New New Worksheet Worksheet or or Existing Existing Worksheet Worksheet as the the location location for your pivot table, and then click OK.

Adding Fields to the Pivot Table An empty pivot table is created in your workbook, either on a new sheet, or the existing sheet that you selected. When you select a cell within the  pivot table, a PivotTable Field Field List appears, at the right of the worksheet.

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We want to see the total insured value in each of the four regions, so we'll add the Region and Insured Value fields to the pivot table. 1. In the PivotTa PivotTable ble Field Field List, List, add a check check mark to to the Region Region field. field. The Region field is automatically added to the pivot table, in the Row Labels area.

2. Add a check check mark mark to the the Insured Insured Value Value field, field, and and it will will be be automatically added to the Values area. You can now see the total insured value in each region.

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Modifying the Pivot Table After you've created a pivot table, you can add more fields, remove fields, or move the fields to a different location in the pivot table layout. We'll remove the Region field, and add the Location field, to see the value of rural policies compared to Urban. 1. To remove remove the Region Region field, field, click click on its its check box, box, to remove remove the check mark. 2. To add the the Location Location field, field, click click on its its check box, box, to add a check  mark. The pivot table now shows the totals for Rural and Urban locations.

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SQL DATABASE MANAGEMENT SYSTEM: Database oriented approach of organizing data provides a set of programs to facilitate users to organize, create, delete, update and manipulate data. DATABASE MANAGEMEN MANAGEMENT T All All thes thesee prog program ramss toge togeth ther er form form a DATABASE SYSTEM(DBMS). RELATIONAL DATABASES: A relational database organizes its data elements as multiple tables with rows and columns. It stores each table as a seperate file. Each table column represents a a data field and each row represents a data record, also known as tupple.

Relati Relationa onall Databa Database se Manage Managemen mentt System System(RD (RDBM BMS) S) provide providess greate greater  r  flexibility of data organization and future enhancements in database as 45

compared to older models of DBMS such as Hierarchical and Network  database models. RDBMS models are found as intuitive models of real life situations by its users since it is easier to understand and use. SQL is a part of RDBMS.

SQL Introduction •

•

•

SQL stands for “Structured Query Language” and can be  pronounced as “SQL” or “sequel – (Structured English Query Language)”. SQL was first commercially implemented by ORACLE CORPORATION in the year 1979. Some of the features which are found to be new in SQL’92 standard are: a.  b. c. d. e. f. g.

Schema Schema defini definitio tion n stat stateme ements nts Temporary statements Buil Built-i t-in n join join ope operat rators ors Read-on Read-only, ly, scrol scrollab lable le and dynami dynamicc cursors cursors Standa Standardi rdized zed conn connect ection ion proc procedu edure re Alte Alteri ring ng and and drop droppi ping ng obj objec ects ts Standa Standardi rdized zed error error codes codes and diagnos diagnostic ticss

Characteristics of SQL: 1. SQL is oriented specifically around relational databases.

2. SQL comma commands nds can operate operate on on several several groups groups of tables tables as as single single objects. 3. SQL allows allows use use of temp tempora orary ry tables tables.. 4. SQL is well suited to a client server environment ,where the DBMS resides on a server and services the client’s request. 5. SQL provides provides a flexible flexible transaction transaction management management.. 6. SQL allows allows the user to specify specify constraints constraints.. 7. SQL allows allows users to to create create domains domains as objects objects in a schema. schema.

Advantages of SQL:

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1. 2. 3. 4.

Provides Provides creating, creating, deleting deleting and and modifying modifying table table structure structure.. Defining Defining the the relationsh relationships ips between between two two or more more tables. tables. Inserti Inserting ng data data into into tabl tables. es. Extracting Extracting data data in meaningful meaningful ways, ways, based based on the the table’s table’s defined relationships. 5. Upda Updati ting ng data data.. 6. Cont Control rolli ling ng a datab databas ase. e.

Types of SQL: •

•

Interactive SQL: it is used to operate directly on a database to  produce output for desired purpose. In this form of SQL, a command is entered and executed. The output can be seen immediately. Embedded SQL: it consists of SQ put inside the programs which are written in other high level language such as COBOL, Pascal,C or C++. This method makes query system more powerful and efficient.

SQL is a query language used for  accessing and modifying information in the database. IBM first developed SQL in 1970s. Also it is an ANSI/ISO standard. It has become a Standard Universal Language used  by most of the relational database management management systems (RDBMS). Some of the RDBMS systems are: Oracle, Microsoft SQL server, Sybase etc. Most of these have provided their own implementation thus enhancing its feature and making it a powerful tool. Few of the sql commands used in sql programming are SELECT Statement, UPDATE Statement, INSERT INTO Statement, DELETE Statement, WHERE Clause, ORDER BY Clause, GROUP BY Clause, ORDER Clause, Joins, Views, GROUP Functions, Indexes etc.



TYPES OF INTEGRITY CONSTRAINTS APPLICABLE TO SQL:

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Constraints are used to limit the type of data that can go into a table. Constraints can be specified when a table is created (with the CREATE TABLE statement) or after the table is created (with the ALTER TABLE statement). We will focus on the following constraints: •

•

•

•

•

•

 NOT NULL UNIQUE PRIMARY KEY FOREIGN KEY CHECK  DEFAULT

1. NOT NULL: It prevents a column from accepting null values.

 NULL value does not mean zero value, it just means absence of  any data in that column. 2.UNIQUE: it ensures that the values entered into a column are all different,i.e,unique. The UNIQUE and PRIMARY KEY constraints both bo th  provide a guarantee for uniqueness for a column or set of columns. A PRIMARY KEY constraint automatically has a UNIQUE constraint defined on it.

3.PRIMARY KEY : to declare a column as primary key of the table, use the PRIMARY KEY constraint. There can be only one primary key in a table. 4.CHECK : this constraint is used to control the values entered into a field.a condition has to be specified along with the CHECK  constraint which must be satisfied by all the values being entered into the column. Otherwise the value will be rejected. 5.DEFAULT: it is used to assign default values to a column,  before any value is assigned to it.

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In a simple manner, SQL is a non-procedural, English-like language that  processes data in groups of records rather than one record at a time. Few significant functions of SQL are: •

•

•

•

•

•

•

store data modify data retrieve data modify data delete data create tables and other database objects delete data

Types of SQL statements There are three basic types of SQL statements: •

•

•

Data definition language (DDL) statements Data manipulation language (DML) statements Dynamic SQL statements

 Data definition language commands:

Create a Database Syntax: CREATE DATABASE  Example: CREATE DATABASE gibs

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 Create a Table Syntax: CREATE TABLE ( , , . . . );  Example:

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Create table student ( Student_id char (10), Student_Fname varchar (10), Student_Lname varchar(10), Student_address varchar(15), Student_dob datetime )

 Alter Table

Alter table command can change the definition of a table even after creating it. This command can add columns to the table, change their sizes, change their datatypes, or add or delete constraints.

Syntax: Alter table

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Add

 Example: Alter table customer  Add cust_id varchar (20)

 Drop table

DROP TABLE command removes the table definition from a database.

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Syntax: Drop table

 Example: Drop table student;

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 Data manipulation language commands:

 Insert values into Table

Syntax: Insert into values (‘’, , ……….);  Example: Insert into student values (‘001’, ‘sanjeev’, ‘gupta’, ‘delhi’, ’04-122010’);

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 Retrieving Data from Table

Syntax: Select * from Retrieve some specific data. Select from where

 Example

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

Deleting data from the table:

User can remove rows from a table with the delete command. this command removes specific rows from a table and not the individual field values. SYNTAX: delete from where ;

EXAMPLE:delete from employee Where emp_code= 104;

 Data control language:

It is another portion of SQL which allows definition of a security mechanism or scheme for protecting data from unauthorized access. Data control language consists of features 56

that determine whether a user ais permitted to perform a  particular action. It contains commands like GRANT, REVOKE,etc.

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