Comments on: Index Awareness Part I: The Basics

By: Dave Rathbun

Dave Rathbun — Fri, 21 Oct 2011 18:22:39 +0000

Allan, index awareness only activates when a user picks from a list of values.

By: AllanGXG

AllanGXG — Fri, 21 Oct 2011 12:53:51 +0000

Hi Dave, Can you help me?

It is possible use the index awareness when the filtered object is being used in the panel “Object result” of web intelligence?

Example: Using the example of your query would change the filter table RESORT for SERVICE_LINE

SELECT
max( RESORT.resort ),
sum(INVOICE_LINE.DAYS * INVOICE_LINE.NB_GUESTS * SERVICE.PRICE)
FROM RESORT, INVOICE_LINE, SERVICE, SERVICE_LINE
WHERE ( RESORT.RESORT_ID=SERVICE_LINE.RESORT_ID )
AND ( SERVICE_LINE.SL_ID=SERVICE.SL_ID )
AND ( SERVICE.SERVICE_ID=INVOICE_LINE.SERVICE_ID )
AND SERVICE_LINE.RESORT_ID = 2
GROUP BY
RESORT.RESORT_ID

By: Dave Rathbun

Dave Rathbun — Thu, 20 Oct 2011 16:43:58 +0000

Vignesh, that’s one of the drawbacks of index awareness. If you use surrogate keys you can get around this since your keys will be single-column values. But compound keys do present a problem. The reason is the way the process works… it converts Resort_Name = “Bahamas Beach” into resort_id = 2. It’s not set up for a compound key.

By: Vignesh Iyer

Vignesh Iyer — Thu, 20 Oct 2011 15:42:27 +0000

Hi Dave,

I have a table where the key is composed on two columns (Composite Keys). How do i then create a PK for an Object. Universe allows only one PK. Is there any workaround for the same.

Thanks,
Vignesh

By: sreedhar

sreedhar — Thu, 03 Mar 2011 09:06:21 +0000

Hi Dave,

Thank you so much. its very informative and helpful.
Could you please let me know if you have posted any thing related to Aggregate awareness.

Thanks,
IssKumar

By: Dave Rathbun

Dave Rathbun — Fri, 30 Jul 2010 13:04:22 +0000

Hi, “Slide 16″ refers to a specific slide in the presentation that you can download, not another blog post.

By: BO

BO — Fri, 30 Jul 2010 10:55:03 +0000

Dave, (BO God)

Good Post about IA.
Where is 16th Post. Pls help me out.
(Please see slide 16 for more details, if you are interested.)

Thanks!
Leenu-K

By: Rafal

Rafal — Fri, 22 Jan 2010 18:05:38 +0000

I am trying to add a primary key to my object but all the buttons on the keys tab are disabled. In my universe I have object A based on stored proc. and object B on a table. I am trying to add a key to object B so that I can use this object to generate lov with key and value pairs.

I was able to set the key on the same object when I tried that in another universe which does not have sotre proc. based objects. Is it possible to get around this limitation?

By: JPetlev

JPetlev — Tue, 19 Jan 2010 18:43:39 +0000

Did you ever create the followup Blog Post? I can’t seem to locate it in your Search…

By: Tijl

Tijl — Thu, 10 Jul 2008 13:21:08 +0000

Hi Dave, i saw your presentation in Berlin earlier this year, and was fascinated by it. Intrigued as well, especially by the index awareness bit. I try to use it in my work, but currently i’m designing on top of a database which has many tables with a multicolumn primary key. And i can’t get it to work.
Do you have any idea of what to do in this case?

Thanks,
Tijl