Transcription of Structured Query Language - halvorsen.blog
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Available Online: Structured Query Language Hans-Petter Halvorsen Structured Query Language Hans-Petter Halvorsen Copyright 2017 3 Table of Contents 1 Introduction to SQL .. 6 Data Definition Language (DDL) .. 8 Data Manipulation Language (DML) .. 8 2 Introduction to SQL Server .. 9 SQL Server Management Studio .. 10 Create a new Database .. 11 Queries .. 12 3 CREATE TABLE .. 13 Database Modelling .. 15 Create Tables using the Designer Tools .. 17 SQL Constraints .. 17 PRIMARY KEY .. 18 FOREIGN KEY .. 19 NOT NULL / Required Columns .. 22 UNIQUE .. 23 CHECK .. 25 DEFAULT .. 27 AUTO INCREMENT or IDENTITY.
SQL (Structured Query Language) is a database computer language designed for managing data in relational database management systems (RDBMS). SQL, is a standardized computer language that was originally developed by IBM for querying, altering and defining relational databases, using declarative statements.
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