Answer:
A query in a database is a request for information stored within a database management system (DBMS), which is the software program that maintains data.
SQL(Structured Query Language ( is a standard language for storing, manipulating, and retrieving data in database.
Five types of SQL queries are:
1) Data Definition Language (DDL).
used to define and modify the structure of a database.
2) Data Manipulation Language (DML).
used to manipulate (change) the data in the database.
3) Data Control Language(DCL).
used for access control and permission management for users in the database.
4) Transaction Control Language(TCL).
used for maintaining consistency of the database and for the management of transactions made by the DML commands.
5) Data Query Language (DQL).
used for performing queries on the data within schema objects.
Answer:
D: HTTP
Explanation:
When we talk about the email address and the different parts, we can mention for example:
Firstly the username, always an email address starts with a username, next we must use the symbol @, for example:
peter @
michael @
we can add numbers or some characters
henry_98 @
The last part is the domain name, this is the email's company.
Answer:
they can view if you left the page on the teacher side of the website
Explanation:
i have made a page just for this
