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QuestionI am not getting option of SQL server. Pin
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Rob Graham6-Oct-07 4:20
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Questionoracle boolean ? Pin
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QuestionAssigning the value from a QueryDef object... Pin
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Questionneed to use CrossJoin, and find differnece in Columns Pin
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QuestionDescription for various tables elements Pin
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QuestionStored Procedures Pin
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Michael Potter5-Oct-07 5:36
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GuyThiebaut5-Oct-07 9:07
professionalGuyThiebaut5-Oct-07 9:07 
Indexing a SQL database is quite a topic in itself.

Read up on it - google it and you will find lots of useful information.

One aspect with SQL indexes that is important to understand is whether, or not, to make the indexes clustered indexes.

Creating clustered indexes can massively speed up data access and it can also create a massive slowing down of data access.

Without going into too much detail, and without being 100% accurate, clustering a table means that the last node on the index is the data and not a pointer(as is the case in non-clustered indexes).
This means that if you have a table that has very few updates on it then there is a good chance that a clustered index is what you want.
A table with a lot of updates is generally not a candidate for clustering; as when the index is written a lot of data may have to be moved around on the disk.
Also you can only have 1 clustered index per table.

The above is just to give you a bit of an idea about what indexing in SQL entails.

Understanding indexes is so important for optimising data access that you will be doing yourself a real favour to read up on it.

I hope this helps...





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QuestionTool to generate data Pin
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QuestionTO STORE IMAGES FROM FOLDER TO DATA BASE Pin
kishoregani5-Oct-07 2:39
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