DB-Quiz1

Is a primary key a unique key?

• yes

• no

Can a table have multiple primary keys?

• yes

• no

Is a weak entity dependent on another entity?

• Yes

• No

Are entities represented by circles in an ER diagram?

• Yes

• No

Is a DBMS used to manage databases?

• Yes

• No

Is MySQL a commercial DBMS?

• Yes

• No

Does a DBMS ensure the ACID properties of transactions?

• Yes

• No

Are NoSQL databases always relational?

• Yes

• No

Is SQL injection a security vulnerability?

• Yes

• No

Is data mining used to analyze data?

• Yes

• No