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INF Assignment 1
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- University Of South Africa (Unisa)
solutions to the INF Assignment 1
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INF3703 ASSIGNMENT 1 SOLUTIONS*QUESTIONS COME FROM A QUESTION BANK, SOME MAY BE MISSING OR
NUMBERED DIFFERENTLY
Question 1: The primary objective of database design is to.
1. Create normalize and redundant conceptual, logical and physical database model.
2. Create, complete, normalized, non-redundant and fully integrated conceptual, logical and
physical database model.
3. Create redundant conceptual, logical and physical database model
4. Create, normalized non-redundant conceptual, logical and physical database model.
Question 2: SELECT STUD_NUMBER, STUD_MODULE FROM
STUDENT WHERE STUD_MODULE = INF3703. Would you
consider the above SQL code a database transaction? Why?
1. Yes – Because it accesses the database
2. No – Because it only update the database
3. No – Because it only accesses the database
4. Yes – Because it only update the database
Question 3: Resolving data requests in a database data environment
must take the following points expect _____ into consideration.
1. Data manipulation – page 732-733
2. Network and node availability
3. Data replication
4. Data distribution
Question 4: The _____ object is the in-memory representation of the
data in the database.
1. Command
2. DataAdapter
3. DataSet - page 871
4. DataReader
, Question 5: When modelling entity relationship, the database designer
must.
1. Create composite diagram.
2. Identify those relations that are similar and combine them.
3. Include all data elements definitions in the data dictionary.
4. Automatically include all relations.
Question 6: NoSQL database is developed to.
1. Deal with problems of NewSQL
2. Enhance interaction with relational data
3. Better manage organisation relational data
4. Deal with the challenges of Big-Data
Question 7: At which stage of design database process do designers
define database and query execution parameters?
1. Physical design
2. Logical design
3. Conceptual design
4. DBMS selection design
Question 8: Questions such as “what document does the system
generate”? “How does the existing system function”? and “How is the
system output used”? are questions asked at which action of database
initial study?
1. Analyse the company situation.
2. Define problems and constraints. - page 535
3. Define scope and boundaries
4. Define objective
Question 9: Which of the following is NOT a step performed at the
conceptual stage of database design
1. Distributed database design
2. Data analysis and requirements
3. Determine a suitable file organisation – page 539
4. Data model verification
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