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WRITE SHORT NOTES ON INDEX STRUCTURE OF FILES?
There are two basic parts of indices
1. Ordered indices
2. Hash indices
Every technique must be evaluated on the basis of these factors:
Ø Ordered indices
Ø Primary index
Ø Dense and sparse indices
Ø Multilevel index
Ø Index update
Ø Secondary indices
B+-Tree index files
B+-Tree index structure is the most widely used of various index structures that maintain their efficiency despite insertion and deletion of data.
Ø Structure of B+-Tree
Ø Queries on B+-Tree
Ø Update on B+-Tree
Ø B+-Tree file organization
Ø B-Tree index files
What is data block? Data Block - In oracle the data blocks are referred to as tablespaces. A tablespace is an fields of disk consisting of one or more disk files. A tablespace
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Which operations need the participating relations to be union compatible? A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatibl
define anomalies and different types of anomalies with example
Benefits of Sequential File Organisation It is quick and efficient when dealing with huge volumes of data that require being processed periodically (batch system). Dra
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
Produce a set of relations (equivalent to the Finkelstein entity list) in third normal form (3NF) from the following un-normalised relation. You must use the Finkelstein methodolog
Introductory course and so does not require any fancy coding. I will provide a guidance document to help you in producing the solutions.
E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
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