October 7, 2013 at 6:41 am
hi plz help me
i want help from u guys
example
grade internal grade sno amendno manpower required cost
developer developer1(1year exp) 1 0 3 10000
developer developer2(2year exp) 2 0 2 12000
developer developer3(3 year exp) 3 0 1 15000
senior developer senior grade1 1 0 4 100000
senior developer senior grade1 1 1 3 750000
like that in a table.
can anyone help me for which columns primary columns is need.
how to perform these operations in query wise in T sql.
regards
BAlaji.N
October 7, 2013 at 8:20 am
silentbeautybalaji (10/7/2013)
hi plz help mei want help from u guys
example
grade internal grade sno amendno manpower required cost
developer developer1(1year exp) 1 0 3 10000
developer developer2(2year exp) 2 0 2 12000
developer developer3(3 year exp) 3 0 1 15000
senior developer senior grade1 1 0 4 100000
senior developer senior grade1 1 1 3 750000
like that in a table.
can anyone help me for which columns primary columns is need.
how to perform these operations in query wise in T sql.
regards
BAlaji.N
Hi and welcome to SSC. We can't even take a shot at what you should use for a primary key. To be honest it doesn't like you have a very good candidate key here at all.
You might want to start here so you understand what a primary key is. http://www.w3schools.com/sql/sql_primarykey.asp
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October 7, 2013 at 2:51 pm
silentbeautybalaji (10/7/2013)
can anyone help me for which columns primary columns is need.
My guess is that data modeling for this project is half cooked - at best.
Do you have an E/R model?
Either way, when selecting a Primary Key, a Natural PK I should add, you should ask yourself; "What column/s in this table uniquely identify a member of this entity?"
_____________________________________
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.Viewing 3 posts - 1 through 2 (of 2 total)
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