SQL Database Concepts Question: Download Questions PDF
Tell me what is de-normalization and what are some of the examples of it?
Answer:
De-normalization is used to optimize the readability and performance of the database by adding redundant data. It covers the inefficiencies in the relational database software. De-normalization logical data design tend to improve the query responses by creating rules in the database which are called as constraints.
Examples include the following:
- Materialized views for implementation purpose such as:
- Storing the count of “many” objects in one-to-many relationship
- Linking attribute of one relation with other relations
- To improve the performance and scalability of web applications
Examples include the following:
- Materialized views for implementation purpose such as:
- Storing the count of “many” objects in one-to-many relationship
- Linking attribute of one relation with other relations
- To improve the performance and scalability of web applications
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