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Process-oriented decompositions
Process-oriented decompositions divide complex process, task or function into simpler sub processes until they get simple enough to be deal with. The solutions of these sub functions, then, require to be executed in certain parallel or sequential orders, in order to obtain a solution to complex process.
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
Consider the relations City (city_name, state) Hotel (name, address) City_hotel (hotel_name, city_name, owner) Answer the following queries in relational algebra (i) Find
Hierarchical
losers with new information systems
how design database from begining
FDs in Relationships: Enrols Relationship: None as it is many to many Teaches Relationship : Course code → Instructor Instructor → Course code The next question is:
what is Lossless-join decomposition
Explain the Cascadeless Schedule A cascadeless schedule is one in which for every pair of transactions Ti and Tj like that Tj reads a data item before written by Ti, the commit
Atomicity : Either all functions are laid out or none are. Users could not have to think about the effect of incomplete operations. DBMS ensures this by undoing the functions
Problem Explain at least five relational algebraic operators with a suitable example. Note: All the above descriptions should be done by taking at least two examples from ou
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