Second step at defining type sid in sql, PL-SQL Programming

Second Step at defining type SID in SQL



  1. TYPE SID announces that a type named SID is being defined to the system.
  2. AS VARCHAR(5) defines SID as a distinct type, whose values are represented by values of type VARCHAR(5). In this form of type definition the given representation must be a system- defined type.

Under this definition, SID('S1') is exactly equivalent to the same expression in Tutorial D, and the SQL expression CAST(s AS VARCHAR(5)), where s is a value of type SID, is equivalent to Tutorial D's THE_C(s). However, we have no way of further constraining the string values representing student identifiers; so SID('34x.1'), for example, also denotes a value of type SID, as does SID(' ').

Posted Date: 1/18/2013 2:39:32 AM | Location : United States

Related Discussions:- Second step at defining type sid in sql, Assignment Help, Ask Question on Second step at defining type sid in sql, Get Answer, Expert's Help, Second step at defining type sid in sql Discussions

Write discussion on Second step at defining type sid in sql
Your posts are moderated
Related Questions
Question: (a) In the context of database security explain how the following database features help to enforce security in the database system: (i) Authorisation (ii) Access

Positional and Named Notation You can write the actual parameters when calling a subprogram, using either positional or named notation. That is, you can point to the relationsh

Opening a Cursor Variable The OPEN-FOR statement relates a cursor variable with the multi-row query, executes the query, and then identifies the result set. The syntax for ope

Relational Algebra - SQL It describes some operators, that together constitute an algebra that is not only relationally complete but also irreducibly so (very nearly- apart f

Running the PL/SQL Wrapper To run the PL/SQL Wrapper, go through the wrap command at your operating system prompt by using the syntax as shown: wrap iname=input_file [oname=

SQL Functions The PL/SQL uses all the SQL functions involving the following aggregate functions that summarize the whole columns of the Oracle data: GROUPING, AVG, COUNT, STDDE

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,

Product-specific Packages The Oracle and different Oracle tools are supplied with the product-specific packages which help you to build the PL/SQL-based applications. For illu

Data Types in SQL - Decimal DECIMAL, NUMERIC, REAL, FLOAT and various other terms for various sets of rational numbers. When these key words are specified for the declared typ

Project Description: This is stage 1 of a larger conversion project. We are converting a traditional Server/Client application written in Access 2007 into a web interface with S