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Question 1 Indexes are ocasionally defines on a single field of a file called an indexing field. List and describe the different types of indexes
Question 2 Consider a book is written by a particular author. And you have to explain to someone about the relationship that exists between the author and the book. Normally you can draw a diagram and show the relation. These diagrams are called entity-relationship diagram in which book is one entity, author is one entity, and the relationship that exists between the two entities is written. Likewise explain the various notations used to represent the ER diagram.
Question 3 Consider a banking database (select the tables and fields of your choice). Now apply all the operations of relational algebra and find the result.
Multilevel Index The Multilevel Index is a modification of the secondary level index system. In this system we might be use even more number of levels in case the table is eve
What are the advantages of object ID? The main advantages of Object IDs are as below: i) IDs are not changing ii) IDs are completely independent of the changes in data v
What does the cardinality ratio specify? Mapping cardinalities or cardinality ratios state the number of entities to which another entity can be associated. Mapping cardinaliti
Cardinality shows the number of instances of an entity associated with another entity participating in a relationship. Depend on the cardinality binary relationship can be further
PHYSICAL DBMS ARCHITECTURE The physical architecture defines the software components used to process and enter data, and how these software components are related and interc
how to operate database in access ?
define lock conversion
Design a gennalization and specialization hierarchy for an automobile sales company
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
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
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