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Description
| SESSION | JUL – AUG 2024 |
| PROGRAM | MASTER OF BUSINESS ADMINISTRATION (MBA) |
| SEMESTER | 3 |
| COURSE CODE & NAME | DITF301 DATABASE MANAGEMENT SYSTEMS |
Assignment Set – 1
- a. Explain the Concept of DBMS
- Distinguish between DBMS VS FILE SYSTEM
Ans 1.
- The Concept of DBMS
A Database Management System (DBMS) is software that facilitates the storage, retrieval, and management of data in a structured and efficient manner. DBMS serves as an intermediary between users and databases, ensuring that data is consistently organized, accessible, and secure. The primary objective of a DBMS is to simplify the interaction with data by providing a
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- Explain the Entity-Relationship Model in Detail
Ans 2.
Entity-Relationship Model in Detail
The Entity-Relationship (ER) Model is a conceptual framework used to represent the structure of a database in terms of entities, attributes, and relationships. Developed by Peter Chen in 1976, the ER model serves as a blueprint for designing databases, enabling clear visualization of how data is organized and interrelated.
Entities and Attributes
3.
- Write a note on Hard Disk and its features
- Briefly explain the term Non-Clustered Index
- Explain the terms Primary Key and a Foreign Key
- Write a short note on Union
Ans 3.
- Hard Disk and Its Features
A hard disk is a primary storage device used in computers to store digital data. It is a non-volatile storage medium, meaning it retains data even when the computer is powered off. Hard disks use magnetic storage technology to store data on spinning platters coated with magnetic material. The data is accessed by a read/write head that moves over the platters as they spin. Hard disks are
Assignment Set – 2
- a) Explain the Semantics of TRC Queries
- b) Explain the process of declaring variables & exceptions
Ans 4.
- Semantics of Tuple Relational Calculus (TRC) Queries
Tuple Relational Calculus (TRC) is a non-procedural query language used to describe the desired results of a query without specifying the steps to retrieve them. In TRC, queries are expressed as logical formulas that describe the properties of the tuples to be retrieved. It is based on the concept of specifying
- a) Explain the Properties of Normalized Relations
- b) Write a note on Transaction Processing
- c) Explain Time-Stamp Based Protocols
Ans 5.
- Properties of Normalized Relations
Normalization is a systematic approach in database design to reduce data redundancy and improve data integrity. It involves decomposing a database into smaller, well-structured tables while maintaining data
6.
- a) Explain the Database Recovery Models
- b) Explain the Functions of distributed DBMS
- c) Write a note on Object Identity
- d) Explain why data security is important
Ans 6.
- Database Recovery Models
Database recovery models define strategies for restoring a database to a consistent state after a failure. These models determine how transactions are logged and how recovery is performed. The three primary recovery models are Simple Recovery, Full Recovery, and Bulk-Logged Recovery.
In the Simple Recovery