Structured Query Language (SQL)

Nov 1, 2018Download as pptx, pdf

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Structured Query Language (SQL) is a standard language used to create, retrieve, and manage data in relational databases. SQL allows users to define tables, manipulate data within those tables through insert, update, delete statements, and retrieve data through select statements. SQL has different components including DDL for defining database structure, DML for manipulating data, DCL for controlling access, and TCL for managing transactions.

StructuredQuery
Language
Syed Hassan Ali Hashmi
Syed Asad Abbas Rizvi
Azhar Uddin

What is
Structured
Query
Language
Structured Query Language is a standard Database language which
is used to create, maintain and retrieve the relational database.
What is Relational Database?
Relational database means the data is stored as well as retrieved in
the form of relations (tables).

Most read

Roles ofSQL
 SQL retrieves data from the database.
 It can be used along with programming language to access data
from database. It is a database programming language.
 It can be used to monitor and control data access by various users.
It is a database administration language.
 It can be used as an Internet data access language.

HistoryOfSQL
 the original version of SQL called SEQUEL
(structured English query language) was designed by
an IBM research center in 1974 and 1975. SQL was first introduced
as a commercial database system in 1979 by Oracle Corporation.
 SQL became a standard of the American National Standards
Institute (ANSI) in 1986, and of the InternationalOrganization for
Standardization (ISO) in 1987

WhySQL?
 SQL is very simple and easy to learn
 Allows users to access data in the relational database
management systems.
 Allows users to describe the data.
 Allows users to define the data in a database and manipulate that
data.
 Allows to embed within other languages using SQL modules,
libraries & pre-compilers.
 Allows users to create and drop databases and tables.
 Allows users to set permissions on tables and views.

Several Parts
OfSQL
 DDL (Data Definition Language)
 DML (Data Manipulation Language)
 DCL (Data Control Language)
 TCL (Transaction Control Language)

DDL: Data
Definition
Language
 Data Definition Language is used to define the database structure
or schema. DDL is also used to specify additional properties of the
data.
 This includes changes to the structure of the table like creation of
table or database , altering table, deleting a table , truncate table
or rename a table etc.

DML: Data
Manipulation
Language
DML deals with data manipulation, and includes most common SQL
statements such SELECT, INSERT, UPDATE, DELETE and it is used
to store, modify, retrieve, delete and update data in database

DCL: Data
Control
Language
Data control language are the commands to grant and take back
authority from any database user.

TCL:
Transaction
Control
Language
TransactionControl Language(TCL) commands are used to manage
transactions in the database.These are used to manage the changes
made to the data in a table by DML statements. It also allows
statements to be grouped together into logical transactions.

This document provides an overview of SQL programming including: - A brief history of SQL and how it has evolved over time. - Key SQL fundamentals like database structures, tables, relationships, and normalization. - How to define and modify database structures using commands like CREATE, ALTER, DROP. - How to manipulate data using INSERT, UPDATE, DELETE, and transactions. - How to retrieve data using SELECT statements, joins, and other techniques. - How to aggregate data using functions like SUM, AVG, MAX, MIN, and COUNT. - Additional topics covered include subqueries, views, and resources for further learning.

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Structured Query Language (SQL)

1. StructuredQuery Language Syed Hassan Ali Hashmi Syed Asad Abbas Rizvi Azhar Uddin

2. What is Structured Query Language Structured Query Language is a standard Database language which is used to create, maintain and retrieve the relational database. What is Relational Database? Relational database means the data is stored as well as retrieved in the form of relations (tables).

3. HistoryOfSQL  the original version of SQL called SEQUEL (structured English query language) was designed by an IBM research center in 1974 and 1975. SQL was first introduced as a commercial database system in 1979 by Oracle Corporation.  SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of the InternationalOrganization for Standardization (ISO) in 1987

4. WhySQL?  SQL is very simple and easy to learn  Allows users to access data in the relational database management systems.  Allows users to describe the data.  Allows users to define the data in a database and manipulate that data.  Allows to embed within other languages using SQL modules, libraries & pre-compilers.  Allows users to create and drop databases and tables.  Allows users to set permissions on tables and views.

5. Several Parts OfSQL  DDL (Data Definition Language)  DML (Data Manipulation Language)  DCL (Data Control Language)  TCL (Transaction Control Language)

6. DDL: Data Definition Language  Data Definition Language is used to define the database structure or schema. DDL is also used to specify additional properties of the data.  This includes changes to the structure of the table like creation of table or database , altering table, deleting a table , truncate table or rename a table etc.

7. DML: Data Manipulation Language DML deals with data manipulation, and includes most common SQL statements such SELECT, INSERT, UPDATE, DELETE and it is used to store, modify, retrieve, delete and update data in database

8. DCL: Data Control Language Data control language are the commands to grant and take back authority from any database user.

9. TCL: Transaction Control Language TransactionControl Language(TCL) commands are used to manage transactions in the database.These are used to manage the changes made to the data in a table by DML statements. It also allows statements to be grouped together into logical transactions.

10. Roles ofSQL  SQL retrieves data from the database.  It can be used along with programming language to access data from database. It is a database programming language.  It can be used to monitor and control data access by various users. It is a database administration language.  It can be used as an Internet data access language.

11. AnyQuestion would be Appreciated!

Structured Query Language (SQL)

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