SQL

Structure Query Language (SQL) – Introduction

  • SQL is a non-procedural oriented language which means, we cannot use conditional statements[if, else if, nested if], looping statements[while, do-while, for, for-each], branching statements[switch] and more.
  • PL/SQL is a procedural oriented language which means, we can use conditional statements[if, else if, nested if], looping statements[while, do-while, for, for-each], branching statements[switch] and more.
  • SQL is introduced by the german scientist Mr. EF. Cod in 1968 and released in 1972 with approved by ANSI [American national standard institute].
  • SQL is a database language which is used to communicate with database.
  • SQL is also called as Common Language Interface (CLI) which means, this language can communicate with any RDBMS product such as Oracle, SQL Server, MYSQL, DB2 etc.
  • SQL will pronounce as a sequel which stands for structure english query language. The sequel name has given by Mr. EF. Cod and later ANSI people changed sequel name to SQL.
  • SQL is not a case sensitive but database (oracle) server is a case sensitive and every SQL statement must terminate with a semi-colon (;).
  • SQL is having the following sub languages, they are

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karunakar

I completed the M.TECH, am enthusiastic to finding the gadgets & learning new things.

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