12 Questions
What kind of join is applicable if any other comparison operator is used?
Theta join
Which relational operator yields only the rows that appear in both tables?
Intersect
What is an attribute that uniquely identifies any given entity?
Primary key
What command marks and saves the current point in the processing of a transaction?
SAVEPOINT
Which term best describes the collection of interrelated data?
Database
What yields all rows in one table not found in the other table?
Difference
What type of database supports data located at a single site?
Centralized database
What does DML stand for in the context of database management systems?
Data Manipulation Language
Which of the following is NOT a type of database anomaly?
Retrieval anomaly
Which attribute can have many values?
Multivalued attribute
What is a candidate key?
A super key without redundancies
What type of database supports only one user at a time?
Single-user database
Test your knowledge on ER model, derived/computed attributes, single-valued and multivalued attributes, deletion anomalies, single-user databases, and transactions. This quiz covers the fundamentals of database concepts.
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