Dependency Preservation ensures that no functional dependencies are lost during the decomposition process.TRUEFALSE

Answer

The statement is TRUE.

Dependency preservation is a critical concept in database normalization and decomposition processes. When decomposing a relational schema into smaller schemas, it is essential to ensure that all the functional dependencies that were present in the original schema are still present in the new decomposed schemas. If any functional dependencies are lost in the decomposition process, it could lead to issues such as data anomalies and inconsistency, undermining the benefit of normalization. Therefore, for a decomposition to be considered optimal and effective, it should preserve all functional dependencies while also maintaining other desirable properties such as lossless join.