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advice for questions to ask regarding new database for 3rd party application Expand / Collapse
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Posted Wednesday, August 6, 2014 3:01 PM
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I was wondering if anyone had a form or suggestions to get me started with questions for a PM when asked to create a new database for an application?

So far:

• What is the data archive/purge strategy, or how long does the data need to be retained? Does the application manage this or will it need to be managed at the database level?
• What is the recovery time objective (i.e. how much downtime is acceptable is a disaster recovery situation)?
• What is the recovery point objective (i.e. how much data loss or work loss is acceptable in a disaster recovery situation)?
• Are there any requirements that differe from a standard SQL install (e.g collation.)
Post #1600406
Posted Wednesday, August 6, 2014 4:20 PM


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Encryption requirements?
Usage pattern (OLTP, DW, reporting, etc.)?




And then again, I might be wrong ...
David Webb
Post #1600424
Posted Thursday, August 7, 2014 2:20 PM
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How about Security, who needs access/what kind of access.
Post #1600881
Posted Thursday, August 7, 2014 2:48 PM
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Are there licensing Implications for a new instance (Database licensing, monitoring software)
Can Instance/Database reside on existing Instance/Database that is supporting the same/similar business function or application? and Will combining the instance/database be causing security risks?

Post #1600898
Posted Thursday, August 7, 2014 4:22 PM


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Wow, I don't even go near that until I have some conceptual concepts of the model.

IE: Archiving usually only happens on a few tables. Security may or may not be deeply discussed depending on how the application intends to get involved. And other things.

I usually start with "Can I see the thing?" and go from there. Are you in a medical repository and do you need to obey HIPAA, and do the lawyers care about this database? Sure, point in time recovery versus overnight backups and things are definately things to discuss, but that's never where I'd start. You need to know what you're protecting and administrating before you can start to ask intelligent questions and offer solutions for the expectations.

Well, I do, anyway. Don't know about you guys.



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Post #1600933
Posted Friday, August 8, 2014 11:46 AM


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I think I would start from "What is the data and what application is it there for?", which I suspect is jsust a different way of describing what Craig described as "Can I see the thing?".


Tom
Post #1601292
Posted Friday, August 8, 2014 12:17 PM
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Thanks for the flame, now I know why they call you evil Yes you need to start with an understanding of the application. In my experience, all questions must be raised up front too. Typically a meeting with a PM is a learning session for every party involved. The DBA should not assume he knows everything or assume they can figure it out on their own. All the answers given are relevant to the initial conversation, period.
Post #1601302
Posted Friday, August 8, 2014 12:31 PM


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JeepHound (8/8/2014)
Thanks for the flame, now I know why they call you evil

Now now, not exactly a flame. Certainly not aimed at any one of the particular people above me, just the methodology. It seemed to skip the first steps, at least as I perceive them.

All the answers given are relevant to the initial conversation, period.


A perfectly fair statement. It's a branching logic tree though for me as to where you go from there. Example: Sometimes the 3rd party app has to have SA as per the contracts. You can't do anything about that (other than stick it on an isolated instance). Sometimes they've decided to run poorly implemented ORM, so you can't run FULL recovery without a few hundred gigs worth of tran log space.

I just get concerned about open ended questions like this. It's too easy to just take a list, bring it to a meeting, and not understand all the different concepts that goes behind every question you need to ask.



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Post #1601305
Posted Saturday, August 9, 2014 10:27 AM


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churlbut (8/7/2014)
How about Security, who needs access/what kind of access.


+1 Billion. I also want to know if there are things like personally identifiable information (especially tax IDs, CC #s, etc) stored in plain text. I won't even talk at the conceptual level if there are problems with such things.


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Post #1601442
Posted Saturday, August 9, 2014 1:06 PM


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I'd like to know about the concept of the app accessing data.
Is it through queries constructed at the app side? (including DML statements)?
Is there any "Wannabe-Converter" (like NHyperhate) involved?
How much influence do I have regarding decisions how data access concepts will be designed?




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