Which of the following SQL Course_Code = ‘A4343’;statements is equivalent to this relational algebraic expression?

FROM Registration WHEREConsider the following relational algebraic expression: Which of the following SQL Course_Code = ‘A4343’;statements is equivalent to this relational algebraic expression?

which integrity constraint is satisfied?

Consider the following DBDL description of an entity: Teachers (teach_num: variable length character string length 10 NOT NULL teach_name: variable length character string length 10 NOT NULL) Primary Key: teach_num which integrity constraint is satisfied?


Which of the following definitions best describes an entity?

Which of the following definitions best describes an entity?

Which term best describes the client in this system?

A large enterprise uses a two-tier database architecture and runs complex database applications. Which term best describes the client in this system?

Which choice shows the correct ordering of these activities, from first to last, by assigned numbers?

Consider the following four database design activities:1 – Design user views.2 – Select a DBMS.3 – Apply normalization.4 – Determine entities.Which choice shows the correct ordering of these activities, from first to last, by assigned numbers?

Which of the following lists three characteristics of file-based database systems?

Your company must choose which type of database to use for a new project. Which of the following lists three characteristics of file-based database systems?

Which process is used to prevent the current database operation from reading or writing a data item while that data item is being accessed by another operation?

Which process is used to prevent the current database operation from reading or writing a data item while that data item is being accessed by another operation?

which phase of the database design process would this information be developed?

Consider the following database information:domain s_id: integer domain grd: fixed lengthcharacter string length 1STUDENT_GRADE(Student_Number: s_id NOT NULLGrade: grd ) Primary KeyStudent_NumberDuring which phase of the database design process would this information be developed?

Which of the following best describes a composite key?

Which of the following best describes a composite key?

Which database protection technique should be employed?

Your enterprise is developing a database system that will contain highly sensitive data. Security of the data will take priority over database processing speed. Which database protection technique should be employed?

Page 1 of 1912345...10...Last »

Recent comments