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Describe a technique for direct search? Explain how data is stored within a file so which direct searching can be performed.
For a file of unordered fixed length records by using unspanned blocks and contiguous allocation, it is straight forward to access any record through its position in the file. If the file records are numbered 0,1,2,---,r-1 and the records in every block are numbered 0,1,---bfr-1; whereas bfr is the blocking factor, then ith record of the file is situated in block [(i/bfr)] and is the (I mod bfr) record in that block. Such a file is frequent known as a relative or direct file because records can simply be accessed directly through their relative positions. Accessing a record based on a search condition; thus, it facilitates the construction of access paths on the file, like as the indexes.
What are the failures of Controlling Events Between Objects Failure Unintentional termination of system. Several possible causes: failure of system hardware, o
What is known as heap file organization? In the heap file organization, any record can be placed anywhere in the file where there is space for the record. There is no ordering
Describe in brief about the Sequence Diagrams Sequence diagrams are interaction diagrams which emphasize time ordering of messages. In UML, it is shown as a table which shows
What is data block? Data Block - In oracle the data blocks are referred to as tablespaces. A tablespace is an fields of disk consisting of one or more disk files. A tablespace
Describe the shadow paging technique.
Emergence of Client Server Architecture Some of the pioneering work that was completed by some of the relational database vendors permitted the computing to be distributed on m
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
Explain Candidate Key and Super Key A super key is a set of one or more than attributes that, taken collectively, permits us to identify uniquely a tuple in the relation. Wher
entity relationship diagram about finance
Express types of information available in MySQL? Information as regards the result of queries: This includes number of records affected by any SELECT or UPDATE or DELETE st
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