what is the difference between a web-garden and a web-farm? : Sql dba

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How many levels can subqueries be nested in a FROM clause?

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What is pl sql record in oracle?

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Does normalization improve performance?

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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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What is the difference between the conventional and direct path loads? : aql loader

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What is difference between joins and union?

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what are sequences

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what is view? : Sql dba

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how to enter binary numbers in sql statements? : Sql dba

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Explain what is a view?

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Can a view be updated/inserted/deleted?If Yes under what conditions?

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