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(a) Why did SAP introduce the extended star schema?
why are older data models are being replaced by new data models
It can be easily defined as: The database must not have any unmatched foreign key values. The term "unmatched foreign key value" means a foreign key value for which there doe
Most computer systems authenticate users by asking them for the user name and password. However, the user names and passwords often can be guessed by hackers. Suggest an automated,
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
What is the full form of DDL? DDL is stand for Data Definition Language.
List the data structures implemented by the storage manager. The storage manager executes the following data structure a) Data files b) Data dictionary c) indices
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
Illustrate how you can use QBE to perform logical AND and OR operation
What is theta join explain? Theta Join - The theta join operation is an extension to the natural-join operation which permits us to merge selection and a Cartesian
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