CBSE Class 12 Informatics Practices Free And Open Source Software Notes Set A

FREE AND OPEN SOURCE SOFTWARE Free Software Definition by Richard Stallman’s: It means software is freely accessible, free to use, changed, improved, copied, distributed without any payments. Four kinds of freedom ► Freedom to run the program for any purpose ► Freedom to…

CBSE Class 12 Informatics Practices Communication And Computer Networks Notes

Communication and Computer Networks Network→ It is an interconnected collection of autonomous computers Network Goals → 1. Resource sharing --- All programs, data and peripherals are available to anyone on the network irrespective to the physical location of the resource and…

CBSE Class 12 Informatics Practices Visual Basic Notes

  Visual Basic Revision Tour Intrinsic Controls in Visual basic The visual basic 6.0 provides some standard controls on its control box which are known as intrinsic control. These are built-in controls and are contained in Visual basic .EXE file. These are different from the…

CBSE Class 12 Informatics Practices Visual Basic Interface Styles Notes

  Visual Basic Interface Styles 1> Interface is the visual part of the application, which the user interact with. VB support following three types of interface styles: (i) Single Document Interface (SDI) (ii) Multiple Document Interface (MDI) (iii) Explorer Style Interface 2>…

CBSE Class 12 Informatics Practices Visual Basic Control Structures Notes

  Please click the link below to download pdf file for CBSE Class 12 Informatics Practices Visual Basic Control Structures Study Notes.

CBSE Class 12 Informatics Practices Triggers Notes

,sans-serif;">syntax : ALTER TRIGGER trigger_name DISABLE; For example: ALTER TRIGGER orders_before_insert DISABLE; Drop a Trigger syntax : DROP TRIGGER trigger_name; For example: DROP TRIGGER orders_before_insert; Example: create or replace trigger check_budget_EMP after…

CBSE Class 12 Informatics Practices Procedures Functions And Modules Notes

Procedures, Functions and Modules It’s a named unit of a group of program statement that performs a well defined task. This unit can be called from the calling program. Role of Procedure: Increase Reusability – Using same code again and again. Modularization – Means to divide…

CBSE Class 12 Informatics Practices Oracle SQL Notes

  ORACLE SQL REVISION TOUR What is SQL? When a user wants to get some information from a database file, he can issue a query.  A query is a user–request to retrieve data or information with a certain condition.  SQL is a query language that allows user to specify the…

CBSE Class 12 Informatics Practices Library Functions Notes

Library Functions Library Functions: Library functions are those In-build functions that are already available in VB. Types of Library Functions: • STRING FUNCTIONS • NUMERIC FUNCTIONS • DATE…

CBSE Class 12 Informatics Practices Interacting With Databases Notes

CHAPTER-13 INTERACTING WITH DATABASES Cursor is a method that provides a way to select multiple rows of data from the database and then process each row individually inside the PL/SQL program. Types of Cursors : ♦ Implicit Cursor : Declared for all DML…

CBSE Class 12 Informatics Practices Getting Started With Pl SQL Notes

CBSE Class 12 Informatics Practices Getting Started With pl sql study notes. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as…

CBSE Class 12 Informatics Practices Free And Open Source Software Notes Set B

Chapter - 1 FREE AND OPEN SOURCE SOFTWARE Free Software Definition by Richard Stallman’s: It means software is freely accessible, free to use, changed, improved, copied, distributed without any payments. Four kinds of freedom ► Freedom to run the program for any purpose ►…

CBSE Class 12 Informatics Practices Database Fundamentals Notes

DATABASE FUNDAMENTALS Database Transaction: A transaction is a logical unit of work(LUW) that must succeed or fail in its eternity. A user views a transaction as a logical sequence of read and write operations whereas The system views a transaction as a logical sequence of…