Exam (elaborations)
INF2603 OCT/NOV 2022 Exam
- Course
- INF2603 - Databases I
- Institution
- University Of South Africa (Unisa)
Unisa's 2022 OCT/NOV Exam- to be used for Exam prep.
[Show more]
Seller
Follow
Content preview
UNIVERSITY EXAMINATIONSOCTOBER/NOVEMBER 2022
INF2603
Database 1
100 Marks
Duration 2 Hours
EXAMINERS:
FIRST: Mr ME Bogopa
SECOND: Ms CL Hlengwa
This paper consists of 5 pages.
Instructions:
1. Answer all questions.
2. The marks for each question are given in brackets next to the question.
3. Please answer the questions in the order in which they have been set.
4. You signed an Honesty Declaration. This means you will complete this paper on
your own and without help.
5. This final pdf document should not be password protected.
6. Convert all the pages into a single PDF file.
7. Poorly scanned and hard to read answer files will result in a zero mark.
8. Once your document meets all the criteria, then you can upload the file to myAdmin.
GOOD LUCK.
, 2
INF2603
October/November 2022
QUESTION 1 [20 marks]
Carefully select the most correct answer to each of the following questions. Please write
down only the question number and corresponding to it put the correct option’s number
(e.g. Qu. 1 (e)).
1. Which of the following is NOT a true statement about constraints:
a. Constraints are important because they help to ensure data integrity.
b. Constraints support high-level inserts, updates and deletes.
c. Constraints are normally expressed in the form of rules.
d. A constraint is a restriction placed on the data.
2. The logical view of the relational database is facilitated by the ____.
a. objects defined by the database wizard
b. file system used by the operating system
c. creation of queries using the database wizard
d. creation of data relationships based on a construct known as a table
3. ______ is a common term used in traditional entity relationship modelling, and is used to express
the maximum number of entity occurrences associated with one occurrence of the related entity.
a. Participation
b. Cardinality
c. Multiplicity
d. Association
4. What is the purpose of an entity cluster?
a. define physical database storage for related entities
b. group related entities into a single table
c. improve readability of the ERD
d. make the ERD more complex
5. A query language is a procedural language.
a. True
b. False
6. Business rules apply to businesses and government groups, but not to other types of organisations
such as religious groups or research laboratories.
c. True
d. False
7. In the object-oriented data model (OODM), both data and their relationships are contained in a single
structure known as a(n) ____.
a. entity
b. attribute
c. Constraint
d. Object.
TURN OVER
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lesliehayward. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R80,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
53068 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now