Study tips 1D0-541

Which statement about the relation is correct?

which of the following is a valid DBDL description of the base relations for the ER diagram?

which data records are stored in one or more files with no structured relationship?

Which of the following describes two desirable characteristics of a primary key?

Which relational algebraic operation is used to select specific columns (attributes) from a relation?

What is the next step in refining the data model?

Which of the following best describes the information contained in the data dictionary (or system catalog)?

What are the referential constraints for the relations defined in these relation definitions?

Which characteristic is an advantage of a database management system?

Which relational algebraic operation would yield the Activity Relation table in the exhibit?