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SQL

SQL. Introduction. SQL: Intro. “ S.Q.L. ” or “sequel” Supported by all major commercial database systems Standardized – many new features over time Interactive via GUI or prompt, or embedded in programs Declarative, based on relational algebra. SQL: Intro.

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SQL

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  1. SQL Introduction

  2. SQL: Intro • “S.Q.L.” or “sequel” • Supported by all major commercial database systems • Standardized –many new features over time • Interactive via GUI or prompt, or embedded in programs • Declarative, based on relational algebra

  3. SQL: Intro • Data Definition Language (DDL) • Data Manipulation Language (DML) • Other Commands • indexes, constraints, views, triggers, transactions, authorization, …

  4. SQL: Intro • The Basic SELECT Statement • Select A1,A2,…,An • From R1,R2, …,Rm • Where condition

  5. SQL: Intro • “S.Q.L.” or “sequel” • Supported by all major commercial database systems • Standardized –many new features over time • Interactive via GUI or prompt, or embedded in programs • Declarative, based on relational algebra

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