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Define the terms i) DDL ii) DML DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data def
What is meant by functional dependencies? Consider a relation schema R and α C R and β C R. The functional dependency α ->β holds on relational schema R if in any legal relati
Benefits of using heuristics
Which method is used to key transformation ? A hash method is used to key transformation.
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
Describe the four main ways of optimising disk block access. Ans: a. Disk b. Non-volatile writes buffers c. File organization (Clustering) d. Log-based file system
A practice called Perfect Pets provides private health care for domestic pets throughout America. This service is provided through various clinics located in the main cities of Ame
coventions for displaying an ER schema as ER diagram
Define decision tree classifiers? As the name suggests decision tree classifiers use a tree: Every leaf node has an associated class, and every internal node has a predicate as
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