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Problem
1 What is a Data Warehouse? Mention its advantages
2 Explain the Top-Down and Bottom-up Data Warehouse development Methodologies
3 What is Data Transformation? Explain the tasks involved in it
4 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples
What do you understand by ACID? - ACID (Atomicity Consistency Isolation Durability) is a quality sought after in a reliable database. Here's the relevance of each quality:
what is the importance of back up files
write-set(T): Each data items that are written by a transaction T
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
What are composite attributes? Composite attributes can be separated in to sub parts.
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
Project Description: I am updating my Javascript + HTML website with five domains for the same website I would like to know if I want to create site map and submit it in all the
How to draw an ER diagram to a finance companz
Horizontal Fragmentation- Horizontal fragmentation groups together the tuples in a relation that are collectively used by the main transactions. A horizontal fragment is produced b
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