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file organization, Database Management System
random file orgnization
Posted Date: 4/7/2013 11:09:45 AM | Location : USA
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advantages of database over file system, Q. Why would you choose a datab...
Q. Why would you choose a database system instead of simply storing data in operating system file? Define at a base concept in details. Sol. Advantages of Database over Fil
Shared lock or read lock, Shared lock or Read Lock It is requested ...
Shared lock or Read Lock It is requested by a transaction that needs to just read the value of data item. A shared lock on a data item does not permit an exclusive lock
Increased parallelism-data replication, Increased parallelism : Since the r...
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
Draw enhanced er-diagram for hierarchy of a student database, Draw an EER d...
Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)
Data definition language, Data Definition Language It organises the dat...
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Apriori algorithm-find all frequent large itemsets, Your friend owns a comp...
Your friend owns a computer store in Yuen Long, selling Desktop and Notebook PCs and other computer peripherals. Having been rather successful with his business there, he decided t
What is middleware, Question: a) What is Client/Server and what benefit...
Question: a) What is Client/Server and what benefits can be expected from Client/Server systems? b) Explain what middleware is and what it does. Why would MIS managers be p
Selective replication-data replication, Selective replication: This is a c...
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
Explain concurrency problems, Question: a) There are three concurrency...
Question: a) There are three concurrency problems, i.e. three types of potential mistake which could occur if concurrency control is not properly enforced in the database syst
Skills required, wrie a report on whether a BSc n information systems devel...
wrie a report on whether a BSc n information systems develops the skills required by employers in Database administration
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