Question: What
is SQL?
Answer: SQL
stands for Structured Query Language, which
is used to retrieve, store, and manipulate data in the Database.
Question: What
is data?
Answer:
In simple terms, the data can be considered an object of the relevant facts.
For example, your name, age, height, weight, image, etc.
Question: What
is Database?
Answer: The physical
collection of data in a systematic way is called a database. The Database gives
permission to manage data like a store, retrieve and manipulate.
In
one line Database is the collection data,
schemas, tables, queries, reports, views, and other objects.
Question: What is the table?
Answer: Table Is the collection of data that has columns and rows. A table has a specified number of columns but can have any number of rows.
Example:
Student table
Name
|
Address
|
FatherName
|
DOB
|
Class
|
Dilip
|
Noida
|
PB Singh
|
09-12-2001
|
10
|
Anil
|
GKP
|
MG Singh
|
08-10-2002
|
9
|
Ashish
|
Delhi
|
DK Singh
|
12-02-2012
|
UKG
|
Question:
What is the field in a column?
Answer: A column is the set of values. This contains a particular data type value in the table. It shows vertically in the table. For the example above table includes columns Name, Address, FatherName, DOB
, and Class. Name is the column that contains the student’s name.
Name
|
Dilip
|
Anil
|
Ashish
|
Question: What
is RDBMS?
Answer:
A
Relational Database management system (RDBMS) is the Database management system
in which we maintain data records in tables and relationship among and across
The data and table. The relationship among the data is also stored in the form of
table.
A
Relational Database management system (RDBMS) is an additional condition which
system supports a tabular structure of the data, with applies of relationships
between tables.
A
Relational Database management system (RDBMS) can recombine
the data items from different files, providing powerful tools for data usages.
