Answer / kiran r

In Case of Implicit Cursor. it returns always false because the cursor automatically closes once it is Executed

What are the different types of database management systems?

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can i give user defined exception in a package

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Is a secondary key the same as a foreign key?

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State the difference between implict and explict cursor's?

7 Answers   CTS,

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please explain database architecture..

1 Answers   Infosys,

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What do you understand by pl/sql cursors?

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can i use dbms_output.put_line in a function u are telling as return statement

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what are tables and fields? : Sql dba

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Hi All, I am new to both this blog and technology. I was able to see a response for one of the questions on triggers as below. I would like to know why are we using " if rtrim(to_char(sysdate,'day'))=rtrim('sunday') then" instead, can't we use " if sysdate = 'sunday' then". I can understand the use of "rtrim", but dont know y v r using to_char. I have seen this in many cases but did not get a convincible explaination. Please help me with this and do excuse if this question sounds silly. Thanks in advance...... create or replace trigger trg_sun before insert on <table name> begin if rtrim(to_char(sysdate,'day'))=rtrim('sunday') then raise_application_error(-20345,'no transaction in sunday'); end if; end trg_sun;

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how to include character strings in sql statements? : Sql dba

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What does select count (*) mean in sql?

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Does truncate release storage space?

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