FUNDAMENTALS OF COMPUTER

DATABASE FUNDAMENTALS

DATABASE QUERY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is used to extract information from a database?
A
tables
B
queries
C
relationships
D
keys
Explanation: 

Detailed explanation-1: -SQL (Structured Query Language) is a database management language for relational databases. SQL uses a variety of statements and clauses to get information out of databases; such as: SELECT statements to select the fields of data you want to extract.

Detailed explanation-2: -A query is an important part of technology. It is a significant tool in every computer software. Accordingly, it is true that a query is used to extract information from a database. A data base query retrieved information on a particular subset of data.

Detailed explanation-3: -1. SQL Database Extraction From a Single Table. You can use the SELECT statement with the FROM and WHERE clauses to extract data from one table. The SELECT clause specifies the fields containing the data you want to extract or display.

Detailed explanation-4: -A database search is used to extract data from a database.

There is 1 question to complete.