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Define object-relational systems?
Systems that give object-oriented extensions to relational systems are known as object-relational systems.
Preliminary entities and attributes of human resourse management database management system
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
what factors might influence a company to outsource its IT infrascture.
what are the reasons having variable length records
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
State the process of Rearranging Classes and Operations The various, yet similar operation of different classes can be slightly modified thus that they can be covered by a sin
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
A file of employee have 10,000 blocks on a cylinder of a disk with characteristics r=8ms and btt=0.6ms I want to know the cost of read inthe file under following conditions for a q
Explain what is Aggregation ? Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in th
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