Introduction « PL SQL Data Types « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial
1.Introduction
2.Query Select
3.Set
4.Insert Update Delete
5.Sequences
6.Table
7.Table Joins
8.View
9.Index
10.SQL Data Types
11.Character String Functions
12.Aggregate Functions
13.Date Timestamp Functions
14.Numerical Math Functions
15.Conversion Functions
16.Analytical Functions
17.Miscellaneous Functions
18.Regular Expressions Functions
19.Statistical Functions
20.Linear Regression Functions
21.PL SQL Data Types
22.PL SQL Statements
23.PL SQL Operators
24.PL SQL Programming
25.Cursor
26.Collections
27.Function Procedure Packages
28.Trigger
29.SQL PLUS Session Environment
30.System Tables Data Dictionary
31.System Packages
32.Object Oriented
33.XML
34.Large Objects
35.Transaction
36.User Privilege
Oracle PL/SQL Tutorial » PL SQL Data Types » Introduction 
21.1.Introduction
21.1.1.Block Structure
21.1.2.Your First PL/SQL Block
21.1.3.The slash character (/) at the end of the example executes the PL/SQL.
21.1.4.You can declare the whole string to be enclosed in quotes by using the construct q'!text!'
21.1.5.All identifiers within the same scope must be unique.
21.1.6.Building Expressions with Operators
21.1.7.PL/SQL datatypes
21.1.8.Variable Naming Rules
21.1.9.Introducing the Main Data type Groups
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