FROM Registration WHEREConsider the following relational algebraic expression: Which of the following SQL Course_Code = ‘A4343’;statements is equivalent to this relational algebraic expression?
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?
A large enterprise uses a two-tier database architecture and runs complex database applications. Which term best describes the client in this system?
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?
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?
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?
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?