DATABASE SYSTEMS DESIGN IMPLEMENTATION
AND MANAGEMENT FINAL PAPER 2026
COMPLETE QUESTIONS AND DETAILED
ANSWERS GRADED A+
◉ Relational Data Model. Answer: Model with tables, keys,
relationships, and indexes for data organization.
◉ Normalization. Answer: Process to minimize data redundancies by
evaluating and correcting table structures.
◉ SQL—Structure Query Language. Answer: Language for data
definition, manipulation, retrieval, joins, and set operators.
◉ Subqueries. Answer: Queries nested within other queries for advanced
data retrieval.
◉ Structured Database Models. Answer: Models evolving over time to
organize and manage data efficiently.
◉ Superkey. Answer: Attribute(s) uniquely identifying each row in a
table.
, ◉ Candidate Key. Answer: Selected key to uniquely identify all other
attribute values in a row.
◉ Primary Key. Answer: Key used strictly for data retrieval purposes.
◉ Secondary Key. Answer: Key in one table matching primary key in
another table or being null.
◉ Foreign Key. Answer: Key in one table matching primary key in
another table or being null.
◉ 1:* Relationship (one-to-many). Answer: Relational modeling ideal
where one entity relates to many.
◉ 1:1 Relationship (one-to-one). Answer: Rare relational database
design where each entity relates uniquely.
◉ *:* Relationship (many-to-many). Answer: Relationship not directly
implementable in the relational model.
◉ 1:1 Relationship Example. Answer: Illustration of a one-to-one
relationship between tables.
AND MANAGEMENT FINAL PAPER 2026
COMPLETE QUESTIONS AND DETAILED
ANSWERS GRADED A+
◉ Relational Data Model. Answer: Model with tables, keys,
relationships, and indexes for data organization.
◉ Normalization. Answer: Process to minimize data redundancies by
evaluating and correcting table structures.
◉ SQL—Structure Query Language. Answer: Language for data
definition, manipulation, retrieval, joins, and set operators.
◉ Subqueries. Answer: Queries nested within other queries for advanced
data retrieval.
◉ Structured Database Models. Answer: Models evolving over time to
organize and manage data efficiently.
◉ Superkey. Answer: Attribute(s) uniquely identifying each row in a
table.
, ◉ Candidate Key. Answer: Selected key to uniquely identify all other
attribute values in a row.
◉ Primary Key. Answer: Key used strictly for data retrieval purposes.
◉ Secondary Key. Answer: Key in one table matching primary key in
another table or being null.
◉ Foreign Key. Answer: Key in one table matching primary key in
another table or being null.
◉ 1:* Relationship (one-to-many). Answer: Relational modeling ideal
where one entity relates to many.
◉ 1:1 Relationship (one-to-one). Answer: Rare relational database
design where each entity relates uniquely.
◉ *:* Relationship (many-to-many). Answer: Relationship not directly
implementable in the relational model.
◉ 1:1 Relationship Example. Answer: Illustration of a one-to-one
relationship between tables.
