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Increased parallelism: Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have greater chances that the required data is found on the site where the transaction is implementing. Hence, data replication can minimise movement of data among sites.
Enumerate or state the steps in creating a relevant database of a shop.
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Although how will the system recover The selection of REDO or UNDO for a transaction for the recovery is completed on the basis of the state of the transactions. This state is
explain concept of decomposition?
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
WHAT IS DSS? WRITE ITS REQUIREMENTS.
How Relational Calculus is different from Relational Algebra? What do understand by TRC queries and DRC queries? Ans: Relational calculus contain two calculi, the tuple relati
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Atomicity: It describes a transaction to be a one unit of processing. We can also say either a transaction will be finished completely or not at all. In the transaction example 1
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
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