[PDF] Introduction to Structured Query Language (SQL)





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Introduction to Structured Query Language (SQL)

19 Jul 2019 mysql> CREATE DATABASE StudentAttendance;. Query OK 1 row affected (0.02 sec). Note: In LINUX environment



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8.1 INTRODUCTION

In this chapter

Introduction to

Structured Query

Language (SQL)

C 8

The most important motivation for the

research work that resulted in the relational model was the objective of providing a sharp and clear boundary between the logical and physical aspects of database management."

E. F. Codd

Chap 8.indd 14319-Jul-19 3:45:57 PM

144

InForMatICS PRACTICES - CLASS XI

STRUCTURED QUERY LANGUAGE (SQL)

one has to write application programs to access data in systems there are special kind of programming access data from the database. the Structured Query used by major relational database management systems such as MySQL, oracLe, SQL Server, etc. SQL is easy to learn as the statements comprise of descriptive english words and are not case sensitive. We can create and interact with a database using SQL that we don"t have to specify how to get the data from the database. rather, we simply specify what is to be the data, manipulating data in the database, declare constraints and retrieve data from the database in In this chapter, we will learn how to create a database using MySQL as the rdBMS software. We will create a database called

StudentAttendance (Figure 7.5) that we

how to populate database with data, manipulate data in that and retrieve data from the database through SQL

8.2.1 Installing MySQL

MySQL is an open source rdBMS software which can

(Figure 8.1) means that MySQL is ready for us to enter

SQL statements.

Few rules to follow while writing SQL statements in quotesdbs_dbs4.pdfusesText_8
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