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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.
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Limitations of File Based System The file-based system has some limitations. The limitations are listed as follows: Isolation and separation of data: When the data is
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
find a name whose address is erode from student table
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
what is check point in database management system
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
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