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Re: How do they get the answer?

From: Bunyamin K. Karadeniz <bunyamink_at_havelsan.com.tr>
Date: Tue, 21 Aug 2001 11:28:04 -0700
Message-ID: <F001.00372E2A.20010821110053@fatcity.com>

The answer must be AT LEAST 2 Teachers . Because lets say two teachers Rick and Susan.

Susan gives the subjects 102 and 105
Rick gives the subjects 102 and 105
Nobody else gives these subjects.

This proves that at least two teachers are given salary rise. bunyamin

> >> Each subject is taught by at least 2 teachers.
> So, if 102 and 105 are the 2 subject-ids, then a total of at least 4
> teachers will get selected for salary update.
> Correct ?
>
> Regards,
>
> - Kirti Deshpande
> Verizon Information Services
> http://www.superpages.com
>
> > -----Original Message-----
> > From: kjanusz_at_att.net [SMTP:kjanusz_at_att.net]
> > Sent: Tuesday, August 21, 2001 11:26 AM
> > To: Multiple recipients of list ORACLE-L
> > Subject: How do they get the answer?
> >
> > I am taking the Self-Test software test for the SQL exam
> > and don't see how they get the answer to this problem.
> > They don't explain how it is arrived at.
> >
> > Any help you can give me will be appreciated.
> >
> > Thanks,
> > Ken Janusz, CPIM
> >
> > ----------------------------------
> >
> > Examine the structure of the TEACHER table:
> >
> > Name Null? Type
> > ID NOT NULL NUMBER(9)
> > SALARY NUMBER
> > (7,2)
> > SUBJECT_ID NOT NULL NUMBER(3)
> > SUBJECT_DESCRIPTION VARCHAR2(2)
> >
> > There are 200 teachers and 15 subjects. Each subject is
> > taught
> > by at least 2 teachers.
> >
> > Evaluate this PL/SQL block:
> >
> > DECLARE
> > v_pct_raise number := 1.10;
> > BEGIN
> > UPDATE teacher
> > SET salary = salary * 1.10
> > WHERE subject_id IN (102, 105);
> > COMMIT;
> > END;
> >
> > Which result will the PL/SQL block provide?
> >
> > (A) Only two teachers will receive a 10% salary increase.
> > (B) All of the teachers will receive a 10% salary
> > increase.
> > (C) At least four teachers will receive a 10% salary
> > increase.
> > (D) A syntax error will occur.
> >
> > Answer:
> > (C)
> >
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author:
> > INET: kjanusz_at_att.net
> >
> > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Deshpande, Kirti
> INET: kirti.deshpande_at_verizon.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Bunyamin K. Karadeniz
  INET: bunyamink_at_havelsan.com.tr

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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Received on Tue Aug 21 2001 - 13:28:04 CDT

Original text of this message

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