The SELECT reserved word is part of the Data Manipulation Language (DML) defined by Codd and is used to query data from the database. Because of its popularity, there are many clauses and functions that can be used to construct a query to retrieve data.
Today, I am continuing our exploration of this [...]
The ALTER TABLE statement is part of the Data Definition Language (DDL). The statement is used to modify a table after it has been created. Today, I would like to talk about the three integrity concerns that data modelers deal with.
Entity Data Integrity - Adding primary keys to makes sure [...]
The CREATE TABLE statement is part of the Data Definition Language (DDL). It is used to define a structure to hold rows of data or tuples if we use Relational Algebra concepts. Each table is defined by a set of fields of a certain data type and precision.
Data Types can be [...]
The CREATE LOGIN and CREATE USER statements are part of the Data Definition Language (DDL) defined by Codd. Basically, a server login has to be defined so that person can connect to the server and a user login has to be created to map the server login to a particular database.
The CREATE DATABASE SQL statement is part of the Data Definition Language (DML) defined by Codd and is used define (CREATE), modify (ALTER) or remove (DROP) databases along with there associated files.
Before I talk about crafting a database, I want to classify SQL statements by four known groups.
Cloud TagsAFTER ALTER TABLE ALTER TRIGGER CPAN perl modules CREATE DATABASE create function create procedure CREATE TABLE create trigger create view database administrator database developer DATA TYPES DDL DECLARE DELETE DROP DATABASE DROP TRIGGER DROP VIEW execute EXISTS FORMAT free code INSERT ISNULL John F. Miner III PASS perl script REPLACE SELECT sp_help sp_helptext SQL Server SQL Server Management Studio SSMS. string function sys.databases sys.objects sys.schemas TRIGGERS TRUNCATE TABLE TSQL UPDATE USER DEFINED VIEW vb script