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GDB of CS614 will be launched on Monday, August 04, 2014 (04-August-2014) and will last for 48 hours only

The topic will be as follows:

Consider the following table structure:

ProductID (Primary key, Integer, Not NULL)

ProductName (String, Not NULL)

ManufacturingDate (Date, Not NULL)

ExpiryDate (Date, Not NULL)

Category (Integer, Not NULL, Refers to Category column in Category table)

UnitPrice (Float, Not NULL)

Question: Suppose we want to create index (primary) on this table. Identify the indexing technique, you think is best to consider in this case. Justify your answer with valid reasons.


Note: Try to provide precise, to the point answer and avoid irrelevant details.

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Replies to This Discussion

Quoting a small part of an article form Oracle articles:

Note that the TEST_NORMAL table is organized and that the TEST_RANDOM table is randomly created and hence has disorganized data. In the above table, column EMPNO has 100-percent distinct values and is a good candidate to become a primary key. If you define this column as a primary key, you will create a B-tree index and not a bitmap index because Oracle does not support bitmap primary key indexes.

All of you are missing a key concept here that Bitmap index cant be applied as Primary Index. Although bitmap index is the best indexing strategy but cant be used on primary key colum. Think about it and share your ideas

After going through a lot of articles and Oracle documentation i have finally come to the conclusion that Bitmap index cant be used as primary index.

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