Database Concepts (8th Edition)
Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
bartleby

Concept explainers

Question
Book Icon
Chapter 3, Problem 3.47RQ
Program Plan Intro

SQL:

  • SQL stands for “Structured Query Language”.
  • The current version of SQL is “ANSI SQL – 92”.
  • It contains constructs which are used to define and process database. They are executed using DBMS-supplied command prompt.
  • 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.

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language. It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on. To add a new column, “ADD COLUMN” keyword should be used after mentioning the table name.

Syntax:

Syntax to add a column to an existing table is as follows: (The below query was executed in SQL Server Management Studio).

ALTER TABLE table_Name ADD COLUMN column_Name datatype;

Blurred answer
Students have asked these similar questions
Write the SQL statements using the university schema to perform the followingoperations: Delete all takes tuples corresponding to any section of any course withthe word “advanced” as a part of the title; ignore case when matching theword with the title.
Explain what the following SQL statements do. SELECT MAX(NewColumn) FROM (SELECT Patientid, COUNT(*) AS 'NewColumn' FROM PhysicianDX GROUP BY Patientid) AS CountTable
There's a "friend_requests" table that has a column "action_taken" that displays if the friend request was rejected, requested, or accepted.Implement a SQL query to return the percentage of "action_taken" that were "accepted".

Chapter 3 Solutions

Database Concepts (8th Edition)

Knowledge Booster
Background pattern image
Computer Science
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning
Text book image
Oracle 12c: SQL
Computer Science
ISBN:9781305251038
Author:Joan Casteel
Publisher:Cengage Learning