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What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
A Relation Schema represented by R(A1, A2, ..., An) is made up of the relation name the list of attributes and R Ai that it contains. A relation is described as a set of tuples
What is known as sequential file organization? In the sequential file organization, the records are kept in sequential order, according to the value of a "search key" of every
atient(PNumber, Name, NHS_no, Amount_due, DNO, Doctor, Medical_Treatment), relation of schema Staff(StaffNum, Name, DNO, Task) and relation of schema Dept(DNO, Name, Location, Dire
What is Cross Product? Simply Cross product is Binary Operator
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
management information system based on functional organisation
Examine about the Behavioural Diagrams The main objective of behavioural diagrams is to visualize, specify, construct and document dynamic aspects of a system. The interactio
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