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Explain controlled redundancy?
Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
What are stored and derived attributes? Stored attributes: The attributes keeps in a data base are known as stored attributes. Derived attributes: The attributes that are de
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an ex
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole
What are the time stamps associated with each data item? W-timestamp (Q) denotes the largest time stamp if any transaction that implemented WRITE (Q) successfully. R-timesta
Define raid? Briefly explain it? A range of disk organization methods, collectively called redundant arrays of independent disks (RAID) o Improvement of reliability throug
Need an expert in ER database theoretical and modeling database system Project Description: Need an expert in ER database theoretical and modeling database systems? Skills
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
Hi is anyone well versed in accounting information systems available now to help me work through an important assignment due tomorrow at noon?
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
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