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What are called journaling file systems?
File systems that support log disks are known as journaling file systems.
Explain the term - Adjustment of inheritance The inheritance can be enlarged as object design progresses by changing class structure. The designer should do: i) Adjust or r
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
explain concept of decomposition?
external and internal mapping with examples
Objectives After reading this unit you should be able to: Explain storage of databases on hard disks; Discuss the execution of various file Organisation techniques;
sql is relationally complete-justify
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
Replication : It is definite as a copy of a relation. Every replica is stored at a dissimilar site. The alternative to replication is to store only single copy of a relation which
Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
What is an entity relationship model? The entity relationship model is a set of basic objects known as entities and relationship between those objects. An entity is a thing or
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