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What is mean by attachment facility in db2


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tomrsan

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Joined: 15 Oct 2005
Posts: 13
Location: chennai

PostPosted: Tue Dec 06, 2005 7:12 pm
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hi
1.what is mean by attachment facility in db2?
2. what is the max abd min. limit can we give for db2 lock?
3. where is the information for the rollback we can get?
4. why rollback occurs?
5. what is mean by autocommit?
what is mean by alias- i know the answer but whats the correct way to say while the interviewer as me ?
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iknow

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Joined: 22 Aug 2005
Posts: 411
Location: Colarado, US

PostPosted: Tue Dec 06, 2005 8:18 pm
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Hi tomsran,

Quote:
1.what is mean by attachment facility in db2?


An attachment facility is a part of the DB2 code that allows other programs to connect to and use. DB2 to process SQL statements and commands.

Quote:
4. why rollback occurs?


Check this link for a clear explanation on rollback.
publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=/com.ibm.db2.doc.apsg/bjnqmstr314.htm


Quote:
6.what is mean by alias- i know the answer but whats the correct way to say while the interviewer as me ?

An alternative name used to identify a table.
Aliases can refer to local or remote sites.Alias can be referenced by several users


If I get the exact explanation for the rest I will update in this list.
Hope this helps.
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khamarutheen

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Joined: 23 Aug 2005
Posts: 677
Location: NJ

PostPosted: Fri Dec 09, 2005 12:31 pm
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Hi frnd,

Quote:
2. what is the max abd min. limit can we give for db2 lock?

i think there is nothing like min and max... it depends upon the programmer... IRLMPROC will take care of the locking services of DB2..

Quote:
3. where is the information for the rollback we can get?


Refer the link specified by iknow... hope it's enough..

And in the interview point of view u can just say some practical examples.. ie., say what is it and say the situation where it can b used..... i think it will add an extra point once u say the answer with an example...
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tomrsan

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Joined: 15 Oct 2005
Posts: 13
Location: chennai

PostPosted: Sat Dec 10, 2005 5:27 pm
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hi khamarutheen
thanx , the links are very usefull to me,

1) which is the lowest lock level? page, table or tablespace?
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khamarutheen

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Joined: 23 Aug 2005
Posts: 677
Location: NJ

PostPosted: Mon Dec 12, 2005 10:32 am
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Hi santhosh,

I think it goes in this way

1. Page
2. Table
3. Tablespace...
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