Data types and representations, PL-SQL Programming

Assignment Help:

Data Types and Representations

This explains the concept possible representation, abbreviated possrep, and explains how these can be used in conjunction with constraints to define types.

Example: A Type Definition

TYPE SID POSSREP SID {C CHAR

CONSTRAINT LENGTH(C) <= 5

AND

STARTS_WITH(C, 'S')

AND

IS_DIGITS (SUBSTRING(C, 1)))

} ;

Related Discussions:- Data types and representations

Understanding varrays, Understanding Varrays The Items of type VARRAY ar...

Understanding Varrays The Items of type VARRAY are termed as the varrays. They permit you to relate a single identifier with the whole collection. This relationship lets you man

Parameter default values, Parameter Default Values As the illustration ...

Parameter Default Values As the illustration below shows, you can initialize the IN parameters to the default values. In that way, you can pass various numbers of actual par

Python function, This task involves developing some functions that extract ...

This task involves developing some functions that extract data from an SQL database. The scenario is that a company which owns an online vehicle search website wants to generate so

Name resolution - pl/sql, Name Resolution During the compilation, th...

Name Resolution During the compilation, the PL/SQL compiler relates identifiers like the name of a variable with an address or memory location, actual value, or datatype. Th

Overriding default locking, Overriding Default Locking By default, the...

Overriding Default Locking By default, the Oracle locks the data structures for you automatically. Though, you can request exact data locks on rows or tables when it is to you

Parameter and keyword description - exit statement, Parameter and Keyword D...

Parameter and Keyword Description: EXIT: An unconditional EXIT statement (i.e., one without a WHEN clause) exits the present loop instantly. The Execution resumes with th

Effects of null for unique specification - sql, Effects of NULL for UNIQUE ...

Effects of NULL for UNIQUE Specification When a UNIQUE specification u for base table t includes a column c that is not subject to a NOT NULL constraint, the appearance of sev

Develop a job management site, Lightweight system to provide and take info ...

Lightweight system to provide and take info from workers in the field and office, have basic design outlined already just require build and implementation Desired Skills CSS,

Renaming columns - sql, Renaming Columns - SQL SQL has no direct count...

Renaming Columns - SQL SQL has no direct counterpart of RENAME. To derive the table on the right in Figure 4.4 from the table on the left, Tutorial D has IS_CALLED RENAME ( St

Write a program to implement inverted file shown slider, Write a program to...

Write a program to implement the inverted file shown in the slides (Simple Index file, LabelID file and Data file). Use the Avail_List to point at the deleted Label IDs so that th

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages