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Editorial Team
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Asked: 2026-06-13T02:33:39+00:00

I am creating a very simple database table from data provided to me in

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I am creating a very simple database table from data provided to me in exel format, and I will be using 4 columns:

Date/time
IP address
Hostname
Vulnerability identified

I usually get one exel sheet per day, with anything between 1000 – 3000 rows. The Date/time field consists of YYYYMMDDHHMM and can be duplicated a number of times, but should have a unique IP address against each same date/time column, e.g. 2012-08-26:16:01, 80.3.3.255, 2012-08-26:16:01, 192.168.0.1. Having reviewed some similar questions, would it be more efficient to generate a unique primary key per record, or join the date/time and IP column to create the primary key?

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1 Answer

  1. Editorial Team

    This depends on at least two angles:

    • on the WHERE criteria used later for selecting: If you plan to select by timestamp and IP independently, I suggest you create non-unique keys for those and a simple (maybe AUTO_INCREMENT) primary for each row.
    • How you want to deal with it, if a duplicate timestamp/IP does occur: A unique or primary key would rule this out, while a separate key would happily coexist. It depends on your app requirements, which one you prefer.
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