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Database Systems 2025/2026 – 200+ Verified Exam Questions with Correct Answers | DBMS, Data Models, ER Diagrams, SQL & Keys

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This Database Systems 2025/2026 exam preparation resource contains over 200 verified multiple-choice questions with correct answers, meticulously covering both foundational and advanced topics in database theory and practice. It explores essential areas such as database management systems (DBMS), data models (conceptual, logical, and physical), entity-relationship (ER) diagrams and notation, keys and constraints, normalization, relational and object data models, and various database architectures including client-server, three-tier, and n-tier systems. The material also addresses transaction management, data integrity, database roles and responsibilities, metadata, and the distinction between controlled and uncontrolled redundancy. Practical aspects such as SQL usage, query optimization, database design processes, and the handling of big data, NoSQL, cloud storage, and GIS are also included. The document is highly relevant for computer science students, software engineering majors, database administration trainees, IT certification candidates, and information systems professionals preparing for academic exams, professional credentials, or job assessments. Instructors and trainers can also use this as a ready-to-deploy question bank for coursework, assignments, and mock tests. Keywords: database systems, DBMS, ER diagrams, keys, SQL, data models, database design, relational model, normalization, NoSQL

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Database Systems
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Database Systems

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Uploaded on
August 9, 2025
Number of pages
30
Written in
2025/2026
Type
Exam (elaborations)
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Questions & answers

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Database Systems 2025/2026 Exam
Questions and Verified Answers |
Already Graded A+



traditional database applications - 🧠 ANSWER ✔✔information that is stored and

accessed is either textual or numeric


big data/nosql (not only sql) systems - 🧠 ANSWER ✔✔new types of database

systems that have been created to manage data for social media applications


cloud storage - 🧠 ANSWER ✔✔users are provided with storage capabilities on the

Web for managing all types of data including documents, programs, images,

videos, and emails.


multimedia database - 🧠 ANSWER ✔✔stores images, audio clips, and/or video

clips

,geographic information systems (GISs) - 🧠 ANSWER ✔✔stores and analyze maps,

weather data, and satellite images

Data warehouses and online analytical processing (OLAP) - 🧠 ANSWER

✔✔systems used in many companies to extract and analyze useful business

information from very large databases to support decision making


Real-time and active database technology - 🧠 ANSWER ✔✔used to control

industrial and manufacturing processes


database search techniques - 🧠 ANSWER ✔✔improve the search for information

that is needed by users browsing the Internet.


database - 🧠 ANSWER ✔✔a collection of related data; a collection of organized

data


data - 🧠 ANSWER ✔✔known facts that can be recorded and that have implicit

meaning.


miniworld/universe of discourse - 🧠 ANSWER ✔✔terms used to express how a

database represents some aspect of the real world; some part of the real world

about which data is stored in a database

, database management system (DBMS) - 🧠 ANSWER ✔✔a computerized system

that enables users to create and maintain a database. a general-purpose software

system that facilitates the processes of defining, constructing, manipulating, and

sharing databases among various users and applications/ a software package,

system to facilitate the creation and maintenance of a database


defining a database - 🧠 ANSWER ✔✔involves specifying the data types,

structures, and constraints of the data to be stored in the database


constructing the database - 🧠 ANSWER ✔✔the process of storing the data on some

storage medium that is controlled by the DBMS


manipulating a database - 🧠 ANSWER ✔✔Includes functions such as querying the

database to retrieve specific data, updating the database to reflect changes in the

miniworld, and generating reports from the data


sharing a database - 🧠 ANSWER ✔✔allows multiple users and programs to access

the database simultaneously


application program - 🧠 ANSWER ✔✔accesses the database by sending queries or

requests for data to the DBMS


query - 🧠 ANSWER ✔✔causes some data to be retrieved



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