Laboratory work 3

Data manipulation in SQL Oracle

Contents

1. Purpose of the lab 1

2. Theoretical backgrounds 1

2.1. Inserting rows in a table 2

2.1.1. Syntax 2

2.1.2. Purpose 2

2.1.3. Prerequisites 2

2.1.4. Keywords and Parameters 2

2.1.5. Examples 3

2.2. Updating rows in a table 3

2.2.1. Syntax 3

2.2.2. Purpose 3

2.2.3. Prerequisites 3

2.2.4. Keywords and Parameters 3

2.2.5. Examples 4

2.3. Deleting rows in a table 5

2.3.1. Syntax 5

2.3.2. Purpose 5

2.3.3. Prerequisites 5

2.3.4. Keywords and Parameters 5

2.3.5. Examples 5

3. Lab tasks 6

3.1.1. Inserting rows in tables 6

3.1.2. Updating rows in tables 7

4. Control questions 7

1. Purpose of the lab

• To study SQL Oracle possibilities in inserting, updating and deleting rows in a tables.

• To acquire practical skills in inserting, updating and deleting rows in a tables by using SQL*Plus.

2. Theoretical backgrounds

There are three SQL statements that enable you to manipulate the data within a database's table. These statements are the following:

• The INSERTstatement – allows to add new rows of data into a tables.

• The UPDATEstatement – allows to change column values in existing rows of a table.

• The DELETEstatement – allows to remove rows from a table.

1. Inserting rows in a table

   1. Syntax

2. Purpose

To add rows to a table.

3. Prerequisites

For you to insert rows into a table, the table must be in your own schema or you must have INSERT privilege on the table.

If you have the INSERT ANY TABLE system privilege, you can also insert rows into any table.