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What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
One-to-one relationship: For every 1:1 relationship type R in the ER diagram including two entities E1 and E2 we take one of entities (say E1) preferably with total participatio
Text Processing: Use readLines to read SOU.txt into R. Create a vector called Pres containing the names of the presidents giving each speech. To do this, rst identify the lin
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
we need example of 2phase locking
In which format database schema is written ? Data base schema is written in the DDL format.
What is hash file organization? What are the causes of bucket overflow within a hash file organization? What can be completed to decrease the occurrence of bucket overflow?
Explain the differences between structured data and unstructured data. Structured data are facts concerning objects and events. The most significant structured data are numeric
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
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