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Physical Records
These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent memory locations and retrieved mutually as a unit. Considering the page memory system, data page is the quantity of data read or written in single I/O operation to and from secondary storage device to the memory and vice-versa. In this context we describe a term blocking factor that is explained as the number of physical records per page.
Consider the subsequent relations RENTER(rno, fname, lname, address, tel_no, pref_type, max_rent) VIEWING(rno, pno, date, comment) PROPERTY_FOR_RENT( pno, street, area ,city,
Object Oriented model :An object has values stored in instance variables within the object. An object also has bodies of code that execute on the object. These bodies of code are
Explain the Management of Data Store Every system irrespective of its nature of application requires storing permanent data for consequent use in problem solving. Some objects
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explain in detail about crash recovery
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Project Description: Critical Project for VMware Technical support. VMWare ESXi 5.1 support for upgradation and migration problem. Technical expert of Vmware needed. Sk
What is the use of group by clause? Group by clause is used to be relevant aggregate functions to a set of tuples. The attributes given in the group by clause are used to shape
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