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CREATE A DATABASE

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Topic

benildusmuerling
Yak Posting Veteran

81 Posts

Posted - 2012-06-20 : 22:50:25

Hi Guys and Geeks,

Hope you will read and comment to me on this, I have been asked to create a Database, with a minimun of 5 tables, and it may grow as the days go by.

These 5 tables are to be created now with primary and foriegn key relationships.

Indexing will be done later.

Need the kickstart, I know to do it, but the efficient way for the primary and foreign key relationships.

Thanks,

Antonio

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-06-20 : 22:55:33

didnt understand what you mean by efficient way. Are you asking a design approach or syntax as such for PK FK creation?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

benildusmuerling
Yak Posting Veteran

81 Posts

Posted - 2012-06-20 : 23:48:31

The efficient way is the normal way, which I should follow, in creating the tables and the database, yes the design approach and the primary, foreign key approach would be needed as an advicce..

for example, I know how to create a database and create a table, without investigating or googling, however I would like to follow the rules in having this DB a flexible one, which could be used in a long run..

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-06-21 : 00:20:11

what do you mean by having DB flexible one? generally you will create fks in tables which need to refer to master table and link it to its pk column

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

benildusmuerling
Yak Posting Veteran

81 Posts

Posted - 2012-06-21 : 01:40:10

Just the way how you guys create a database with some tables, now let me tell the scenario

Thank you for reading the post

1) Table names - Merchant, Deal, OrderDeals, Returns, Order

Merchant(1) to Deal(M) - relationship (1 to many)
Returns (1) to Order(M) - relationship (1 to many)

Order(M) to Deal(M) - relationship (Many to Many)

in the above case of many to many, we bring the orderdeals table

Order(1) to OrderDeals(M) - relationship (1 to Many)
Deal(1) to OrderDeals(M) - relationship (1 to Many)

Can you help me in doing this now..

Thanks,

AB

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-06-21 : 18:13:41

[code]
CREATE TABLE Merchant
(
MerchantID int IDENTITY(1,1) PRIMARY KEY,

other columns...
)

CREATE TABLE Deal
(
DealID int IDENTITY(1,1) PRIMARY KEY,

other columns...
)

CREATE TABLE Order
(
OrderID int IDENTITY(1,1) PRIMARY KEY,

other columns...
)

CREATE TABLE MerchantDeals
(
MerchantDealID int IDENTITY(1,1) PRIMARY KEY,
MerchantID int REFERENCES Merchant (MerchantID),
DealID int REFERENCES Deal (DealID)
...
)

CREATE TABLE OrderReturn
(
OrderReturnID int IDENTITY(1,1) PRIMARY KEY,
OrderID int REFERENCES Order (OrderID),
ReturnID int REFERENCES Return (ReturnID)
...
)

CREATE TABLE OrderDeals
(
OrderDealID int IDENTITY(1,) PRIMARY KEY,
OrderID int REFERENCES Order (OrderID),
DealID int REFERENCES Deal (DealID)
...
)
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

benildusmuerling
Yak Posting Veteran

81 Posts

Posted - 2012-06-25 : 21:05:36

Thanks mate, how about the constraints, dont I have to add those..

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