WE PROVIDE CASE STUDY ANSWERS, ASSIGNMENT SOLUTIONS, PROJECT REPORTS AND THESIS
ARAVIND - 09901366442 – 09902787224
DATA MANAGEMENT
1. What is data
structure? Explain different types of data structures.
2. Explain the
difference between general and binary trees.
3. What is index
structures?
4. What is sorting
and merging files.
5. What is
sequential file organization?
6. What is relative
file organization?
7. What is indexed
sequential file organization?
8. What is
multi-key file organization?
9. Explain
different file systems.
10. Write a short
note on: ( any two)
a) Arrays
b) Records
c) Stacks
d) Queues
DATA
MANAGEMENT
CASE STUDY : 1
The physical or internal level
organization of a database system is concerned with the
efficient storage of
information in the Secondary Storage devices.
The physical to conceptual
level mapping must provide the necessary shield to the user.
The basic problem in physical
database representation is to select a suitable file system
to store the desired
information. The file consist of records and a record may consist of
several fields.
Question :
1) What are the typical
operations that may be performed on the information stored in
the file?
2) Explain in detail factors
affecting physical organization of data?
3) Explain the term ‘Magnetic
Tapes’?
4) Define in brief ‘Secondary
Storage Devices’?
CASE STUDY : 2
In a medical database with
attributes DISEASE, SYMPTOM, TEST (such as
pathological or clinical
tests), TREATMENT and MEDICINE, following data
dependencies are assumed to
hold.
Question :
1) Compute the dependency basis
of each attribute?
2) Identify the join
dependencies that hold in this database?
3) Does there exist a fourth
normal form decomposition that preserves the
dependencies?
4) If so, design a fourth
normal form lossless, join decomposition that preserves the
dependencies?
CASE STUDY : 3
Question :
1) Anyone can read BANKACNT
relation except for the ACCT NO attribute.
2) Any accountholder can read
the tuple corresponding to his/her own account number
from the ACNT DETAIL relation.
3) Bank employees can read
tuples from ACNT DETAIL relation, but only those
employees whose job is TELLER
can update entries in the ACNT DETAIL relation
pertaining to any ACCT NO (this
field cannot be modified).
4) Bank employees can read BANK
EMPLOYEE relation except for the SALARY
attribute.
CASE STUDY : 4
Question :
1) Explain why transaction
atomicity is one of the most important requirement for
concurrency control?
2) Describe how in a multiuser
environment atomicity of read and write operations can
be ensured, especially for
large data items i.e. when the granularity of data items is
larger than a disc block?
3) Describe the functional
modules of a centralized database system responsible for
concurrency control and
recovery?
4) Discuss how database read
and write operations are implemented?
WE PROVIDE CASE STUDY ANSWERS, ASSIGNMENT SOLUTIONS, PROJECT REPORTS AND THESIS
ARAVIND - 09901366442 – 09902787224
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