SQLGuide.ppt.pptx
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This document provides an overview of Structured Query Language (SQL) and what will be covered. It discusses that SQL is a data manipulation language used to query and manage data in a database. The document outlines that SQL has three main types of commands: Data Definition Language for defining the database structure, Data Manipulation Language for maintaining and querying the data, and Data Control Language for administering privileges and transactions. It also notes that creating tables is part of the Data Definition Language that will be discussed.
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SQLGuide.ppt.pptx
- 1. Structured Query Language – The Basics
- 2. What We’re Going to Cover Overview of SQL (This may be review for some of you) Data Definition Language Creating tables (we’ll just talk about this) Data Manipulation Language Inserting/Updating/Deleting data Retrieving data Single table queries Where Joins Grouping
- 3. SQL SQL is a data manipulation language. SQL is not a programming language. SQL commands are interpreted by the DBMS engine. SQL commands can be used interactively as a query language within the DBMS. SQL commands can be embedded within programming languages.
- 4. 3 Types of SQL Commands Data Definition Language (DDL): Commands that define a database - Create, Alter, Drop Data Manipulation Language (DML) Commands that maintain and query a database. Data Control Language (DCL) Commands that control a database, including administering privileges and committing data.