Child row is a related row where there is a ? Primary key Foreign key Candidate key Composite key
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Child row is a related row where there is a ?Primary keyForeign keyCandidate keyComposite key
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- Primary keys and candidate keys may both be assigned to the same attribute.Question 1 Computer Science Open the totalfees query in Design view. Modify the query by creating a calculated field that sums the total of registrationfee, guestfee, and workshopfee. Use totalfees as the name of the calculated fieldThe database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule with the lesson date/time, horse ID, and the student's first and last names. Order the results in ascending order by lesson date/time, then by horse ID. Unassigned lesson times (student ID is NULL) should not appear in the schedule.
- The database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule with the lesson date/time, horse ID, and the student's first and last names. Order the results in ascending order by lesson date/time, then by horse ID. Unassigned lesson times (student ID is NULL) should not appear in the schedule. Hint: Perform a join on the Student and LessonSchedule tables, matching the student IDs10. The minimal set of super key is called a. Primary key b. Secondary key c. Candidate key d. Foreign keycreate a table job_history including columns employee_id,start_date,end_date,jobname and department name and make sure that the employee_id column doesnot contain any duplicate value.write a Java program to insert atleast four records.by using prepared statement display job name and department name corresponding to a particular year.
- 106. ____________ is a combination of two of more attributes used as a primary key a. Composite Key b. Alternate Key c. Candidate Key d. Foreign KeyThe Member table will have the following columns: ID—positive integer FirstName—variable-length string with up to 100 characters MiddleInitial—fixed-length string with 1 character LastName—variable-length string with up to 100 characters DateOfBirth—date AnnualPledge—positive decimal value representing a cost of up to $999,999, with 2 digits for cents Write a SQL statement to create the Member table. Do not add any additional constraints to any column beyond what is stated. Input to program3.9 LAB - Select lesson schedule with inner join The database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule with the lesson date/time, horse ID, and the student's first and last names. Order the results in ascending order by lesson date/time, then by horse ID. Unassigned lesson times (student ID is NULL) should not appear in the schedule. Hint: Perform a join on the Student and LessonSchedule tables, matching the student IDs.
