murali

• Aug 30th, 2006

 

A vector is a sequence of the same type of elements. The element type may be any type including a vector or record type.

 It is a  field which tell us how many times a particular field is repeated .for example

Take this input

Cust_id    purchase_amount  purchase date

101          1000                     29.08.06

101           500                      30.08.06

102           1050                     31.08.06

103          1140                     1.0906

103          1000                      02.0906

103           500                       30.09.06

 

Cust_id  total_purchase_amount     no_purchase purchase_date(1)  purchase_date(2

 

101          1500                                 2                 29.08.06                 30.08.06

102           1050                                1                  31.08.06            

103           2640                                3                  1.09.06                 02.09.06  so on

 

 

Here no_purchase is the vector field which rep the no of times a cust hase done purchases.

 

muralidharreddy.v

• Feb 7th, 2007

 

Hi Vector is nothing but Array's in C. for example Transactions[0] Transactions[1] Transactions[2]Customer ID n dt Amount dt Amount dt AmountC002142 2 1994.03.23 52.20 1994.06.22 22.25 C003213 3 1993.02.12 47.95 1994.11.05 221.24 1995.12.11 17.42C004221 1 1994.08.15 25.25 C008231 2 1993.10.22 122.00 1995.12.10 52.10This is vector concepts. When you call customer Id with C002142 then we will get all the Transactions of his data trhough array.