A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Concept explainers
Question
Chapter 3, Problem 11RQ
Program Plan Intro
SQL:
- SQL stands for “Structured Query Language”.
- The current version of SQL is “ANSI SQL – 92”.
- SQL is not a
programming language. It is text-based and it is also called as data sublanguage.- In order to get SQL as a complete programming language, it should be included in scripting languages like Java, C#, and so on.
- It contains constructs which are used to define and process
database . They are executed using DBMS-supplied command prompt. - Some of the DBMS products that provide GUI tools in order to perform tasks are as follows:
- SQL Server
- Oracle Database
- MySQL
Data Manipulation Language (DML):
This is used for manipulation like, querying, insertion, updating, and deletion of data.
Query to create table “EMPLOYEE”:
CREATE TABLE EMPLOYEE
(emp_id number(10) NOT NULL,
emp_name varchar2(50) NOT NULL,
city varchar2(50),CONSTRAINT emp_pk PRIMARY KEY (emp_id));
Explanation:
The above query is used to create the table “EMPlOLYEE”. The attribute “emp_id” is declared as “NUMBER”, “emp_name” and “city” is declared as “varchar”. Here, the attribute “emp_id” is set as primary key.
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A Guide to SQL
Ch. 3 - Prob. 1RQCh. 3 - How do you delete a table using SQL?Ch. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Prob. 13RQCh. 3 - Use SQL to complete the following exercises....Ch. 3 - Prob. 2TDCh. 3 - Prob. 3TDCh. 3 - Prob. 4TDCh. 3 - Prob. 5TDCh. 3 - Prob. 6TDCh. 3 - Prob. 7TDCh. 3 - Prob. 1CATCh. 3 - Add the following row to the ADVENTURE_TRIP table:...Ch. 3 - Prob. 3CATCh. 3 - Prob. 4CATCh. 3 - Prob. 5CATCh. 3 - Prob. 6CATCh. 3 - Review the data for the TRIP table in Figure 1-5...Ch. 3 - Colonial Adventure Tours would like to increase...Ch. 3 - Prob. 1SCGCh. 3 - Add the following record to the VACATION_UNIT...Ch. 3 - Delete the VACATION_UNIT table.Ch. 3 - Prob. 4SCGCh. 3 - Prob. 5SCGCh. 3 - Prob. 6SCGCh. 3 - The SERVICE_REQUEST table uses the CHAR data type...
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A Guide to SQL
Computer Science
ISBN:9781111527273
Author:Philip J. Pratt
Publisher:Course Technology Ptr