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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 (A1, A2,....., An) and S (B1, B2,......,Bn) are said to be union compatible if they have the similar degree n and domains of the corresponding attributes are also the similar
i.e. Domain (Ai) = Domain (Bi) for 1<=i<=n.
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
Differance between Unordered and ordered file ? Unordered file do no has any sequence although ordered file has arranged in a few sequence and data are assigned in ordered form
give me a diagram about physical or internal level
sy bcs project of hospital managment system
3NF Normal Form A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true X is a Super-key of R. A is a prime attribute of R
Describe the term- State Diagram State Diagram: An object could receive a sequence of the input instructions. The state of the object can differ depending upon sequence of in
Primary index A primary index is a file that has a sorted series of records having two columns: a block address for that key field in the data file; and the ordering key field.
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
State the Steps of Object Design Object design is a very iterative process in which various classes, relationships among objects are added when you move from one level to
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