Functional Dependency Functional dependency (FD) is a set of constraints between two attributes in a relation. Functional dependency says that if two tuples have same values for attributes A1, A2,..., An, then those two tuples must have to have same values for attributes B1, B2, ..., Bn. Functional dependency is represented by an arrow sign … Continue reading DBMS FUNCTIONAL DEPENDENCY
Understanding Cyclomatic Complexity Explained
What is cyclometric complexity ? ANSWER: Cyclometric complexity is calculated as = no of decision statements + 1 2) What is association, aggregation and composition ?
Understanding Database Transactions: ACID Properties Explained
What is a Transaction? A transaction is an event which occurs on the database. Generally a transaction reads a value from the database or writes a value to the database. If you have any concept of Operating Systems, then we can say that a transaction is analogous to processes. Although a transaction can both read … Continue reading Understanding Database Transactions: ACID Properties Explained
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