MCA3020- ADVANCED DATABASE MANAGEMENT SYSTEM

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SUMMER  2015 ASSIGNMENT

PROGRAM	MCA(REVISED FALL 2012)
SEMESTER	THIRD
SUBJECT CODE & NAME	MCA3020- ADVANCED DATABASE MANAGEMENT SYSTEM
CREDIT	4
BK ID	B1650
MAX. MARKS	60

Note: Answer all questions. Kindly note that answers for 10 marks questions

1. Differentiate between Two-Tier client/server databases and Multi-tier client/server databases.

Answer: Two-Tier Architecture:

The two-tier is based on Client Server architecture. The two-tier architecture is like client server application. The direct communication takes place between client and server. There is no intermediate between client and server. Because of tight coupling a 2 tiered application will run faster.

2. Explain the physical query plan operators. What is the significance of Iterators?

Answer: A plan represents how data flows from a child operator to a parent operator in the form of a tree structure. Query execution flow can be read from right to left and from top to bottom.

In this article we’ll discuss some common and important operators like Index seek/scan, Join (Nested, Merge, and Hash), etc., which are useful to interpret a graphical execution plan and troubleshoot any performance issue due to a

3. Differentiate between Serialisability and Recoverability.

Answer: Serializability

Serializability is the classical concurrency scheme. This helps to ensures that a schedule with regard to performing executing concurrent transactions is equivalent to one that executes the transactions serially in some order. It assumes that all accesses

4. Discuss about Parallel query processing. How parallel-execution works?

Answer: When Oracle runs SQL statements in parallel, multiple processes work together simultaneously to run a single SQL statement. By dividing the work necessary to run a statement among multiple processes, Oracle can run the statement more quickly than if only a single process ran it. This is called parallel execution or parallel processing.

Parallel execution dramatically reduces response time for data-intensive operations on large databases typically associated with decision support systems (DSS) and data warehouses. Symmetric multiprocessing (SMP), clustered systems, and

5. Differentiate between homogeneous and heterogeneous Database.

Answer: A DDBMS may be classified as homogeneous or heterogeneous. In a homogeneous system, all sites use the same DBMS product. In a heterogeneous system, sites may run different DBMS products, which need not be based on the same underlying data model, and so the system may be composed of relational, network, hierarchical and object-oriented DBMSs.

Homogeneous systems are much easier to design and

6. Write short notes on ODMG standards. What are the various components of ODMG-93?

Answer: The ODMG standard builds upon the existing OMG, SQL-92, INCITS (formerly ANSI) programming language standards, and JavaSoft’s Java specification to define a framework for application portability between compliant data storage products. The standard’s functional components include an Object Model, an Object Definition Language, an Object Query Language, and Language Bindings to Java, C++, and Smalltalk.

The two primary benefits of the ODMG

Dear students get fully solved assignments

Send your semester & Specialization name to our mail id :

  help.mbaassignments@gmail.com

or

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