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Learning SQL Database Tutorial step by step Database programming PDF

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Learning SQL(Structure Query Language) PDF Database For Beginner To Advance Download Free.This have all SQL Queries with Examples.This is Advance Sql tutorials.

Introduction To SQL(Structure Query Language)

  • It is a software, developed by Microsoft, which is implemented from the
  • specification of RDBMS.
  • It is also an ORDBMS.
  • It is platform dependent.
  • It is both GUI and command based software.
  •  It supports SQL (SEQUEL) language which is an IBM product, non-procedural,
    common database and case insensitive language

Purpose of SQL

  • Specify syntax/semantics for data definition and manipulation
  • Define data structures and basic operations
  • Enable portability of database definition and application modules
  • Specify minimal (level 1) and complete (level 2) standards
  • Allow for later growth/enhancement to standard (referential integrity, transaction management, user-defined functions, extended join operations, national character sets)

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SQL Environment 

  • Catalog

A set of schemas that constitute the description of a database

  • Schema

The structure that contains descriptions of objects created by a user base

  • Data Definition Language (DDL)

Commands that define a database, including creating, altering, and dropping tables and establishing                              constraints

  • Data Manipulation Language (DML)

Commands that maintain and query a database

  • Data Control Language (DCL)

all Commands that control a database with administrate privilege




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