what is meant by forward declaration in functions?
Answers were Sorted based on User's Feedback
Answer / priyanka samal
Forward declaration means:first you declare the function
what function u want to use in package.atlast doing all the
details of procedure whatever u taken in package
specification.then u define all the details or body part of
function.
2:if u not define function first,there is aerror u have
faced.when u passed this function in procedure
defination,there is a error u faced in compilation.The
procedure can't recognized that function.
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / swapna
Forward Declaration means.. If you are defining a package
body having two procedures , If u want to use second
procedure in the defination of first procedure.
You have to declare the second package with its arguments
(if have) before using in the defination of first
procedure.its labled as forward declaration.
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / papia
You must declare the identifier before referencing them.
It consists of the subprogram specification teminated by a
semicolon.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / raghavendra
declaration first defination later is nothing but a forward
declaration
| Is This Answer Correct ? | 2 Yes | 6 No |
how to retrieve last tree records from table? select *from emp where rownum > (select count(*)-3 from emp); i am using this query to get last three records from table but its not giving any output, so please tell me what is the error in this query.
What is a dynamic query?
how is myisam table stored? : Sql dba
What is a merge query?
What are the disadvantages of not performing database normalization?
Mention what does the hierarchical profiler does?
What is meant by Join? What are the different types of Joins available? Explain.
What is indexes?
What is a recursive join sql?
how to convert numeric values to character strings? : Sql dba
how can we know the count/number of elements of an array? : Sql dba
What is the file extension for sql database?
Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)