Prevent duplication of records within 24 hours

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Please,
I want to prevent users from inserting the same record within 24 hours, but however after 24 hours the insertion should be enabled can any one help me please.
I am using asp.net and vb.net.
I have the following fields in my sqldatabase and text boxes on my asp.net form
ClientID, firstName, lastName, DoB
PLEASE HELP ME

Posted 9-Mar-12 4:24am

Member 8714420

Updated 9-Mar-12 4:35am

Manfred Rudolf Bihy

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Manfred Rudolf Bihy · Answer 1 · 2012-03-09T04:34:00

To keep them from inserting the same record more than once within 24 hours all you need to do is add an integer field to your primary key and make it the DateTime.DayOfYear[^]. So each day they can only insert one record. I'm not sure if this even makes sense for the kind of table you proposed in your question, but you asked for it and here it is.

Regards,

Manfred

E.F. Nijboer · Answer 2 · 2012-03-09T04:33:00

You could add a date to the table and specify a unique index on the specific fields including todays date.

SQL

CREATE TABLE [dbo].[Clients] (
  client_id int ,
  first_name string NOT NULL,
  last_name string NOT NULL
  created_on date NOT NULL
  CONSTRAINT clients_unique UNIQUE ([first_name], [last_name], [created_on])
) ON [PRIMARY]

This way it becomes impossible to add a second client with the same first and last name on a certain date.

Good luck!

PopeDarren · Answer 3 · 2012-03-09T04:35:00

Solution 3

You could add the current day to the list of columns and use collection of columns as the unique identifier.

This probably isn't the best way, but this is what I remember off of the top of my head to get the date in SQL:

SQL

Select Cast(Floor(Cast(getdate() as float)) as datetime)

Posted 9-Mar-12 4:35am

PopeDarren

Updated 9-Mar-12 4:38am

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Prevent duplication of records within 24 hours

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