SCAS - BCA ANSWER SCHEMES

 SAINTGITS COLLEGE OF APPLIED SCIENCES PATHAMUTTOM, KOTTAYAM Model Examination, SEPT 2022 PG Department of Computer Applications and AI Semester 2 Database Management Systems Total : 80 marks Time: 3 hours Section A Answer any 6 questions. Each question carries 3 marks. (Write in not less than a paragraph) 1. Define data, database and DBMS. Data is processed information. Database-Collection of inter related data. DBMS-System to manage database 2. List out the end users of DBMS? The different types of end users are as follows −  Casual end users  Parametric end users  Sophisticated end users  Standalone users 3. Differentiate entity and attribute. A single unique object in the real world A characteristic or trait of an entity type .. 4. Compare Primary Key and Foreign Key. The primary key is a unique or non-null key that uniquely identifies every record in a table or relation. Each database needs a unique identifier for every row of a table, and the primary key plays a vital rol...