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Define blocks?
The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
Which database level is closest to the users? External database level is closest to the users.
These are the binary operations; i.e., each is applied to two relations or sets. These two relations can be union compatible excluding in case of Cartesian product. Two relations R
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
what is the relationship between receipt and owner entities in computer sales and service company
Question: One of the tasks a database management system must perform is to ensure that the data is still intact in the face of software and hardware failure. This task is known
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Explain the term - Adjustment of inheritance The inheritance can be enlarged as object design progresses by changing class structure. The designer should do: i) Adjust or r
Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following
Provide Examples of different types of Time and Date formats. It's most common store dates using a dash (-) as a colon (:)and the delimiter as the time delimiter. The given fo
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