Three schema Architecture The three schema architecture is also called ANSI/SPARC architecture or three-level architecture. This framework is used to describe the…
Tag:
sql introduction
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Evaluation of Expressions In our previous sections, we understood various concepts in query processing. We learned about the query processing steps, selection…
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Indexing in DBMS Indexing is used to optimize the performance of a database by minimizing the number of disk accesses required when…
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Mapping Constraints A mapping constraint is a data constraint that expresses the number of entities to which another entity can be related…
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Referential Integrity constraint A referential integrity constraint is also known as foreign key constraint. A foreign key is a key whose values…
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SQL INSERT Statement The SQL INSERT statement is used to insert a single or multiple data in a table. In SQL, You…
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Timestamp Ordering Protocol The Timestamp Ordering Protocol is used to order the transactions based on their Timestamps. The order of transaction is…
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External Sort-Merge Algorithm Till now, we saw that sorting is an important term in any database system. It means arranging the data…
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Materialization in Query Processing In the previous, we took a brief introduction about materialization and how to evaluate multiple operations of an…
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DBMS MCQ This section of interview questions and answers focuses on “Database Management System”. One shall practice these interview questions to improve…