he fact that the value of a foreign key attribute must exist in another set of one or more key attributes in another table, is called a(n) __________. Group of Choice: A. functional dependency B. semantic constraint C. normal form
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- 107. On a relational database, the kind of constraint which must be specified and does not contain large classes of constraints is considered as a. referential integrity constraint b. null integrity constraint c. semantic integrity constraints d. secondary integrity constraint105. The type of constraint which states that not even a single value with primary key can be a null value is classified as a. null integrity constraint b. primary integrity constraint c. secondary integrity constraint d. entity integrity constraint1.5) An attribute can be atomic, composite, or multivaluedTrue False 1.6) Constraints should be used to force valid data entry / modification to the databaseTrue False 1.7) A primary key can contain only single row with null value since duplicate values are not allowedTrue False 1.8) Comparison with null can be meaningfully done with equals and not equals operatorTrue False
- 15. A table is said to exhibit referential integrity if: a. it has no foreign key. b. it has a foreign key, and all the foreign key values are unique and not null. c. it has a foreign key, and all the foreign key values are referenced in another table's primary key attribute. d. it has a foreign key, which is also a component of its primary key.Implement your table design by creating table statements. Your tables should have constraints such as primary keys and foreign keys. (You can use MySQL Workbench or any other database management system of your choosing). Types such as Char, Integer must be correctly placed. 2) Add one trigger to your database that utilizes a default function of your DBMS 3) Add dummy data to your database. (5 manual entries for each table should be sufficient.) 4) Consider the nominal forms and integrity of your database, it will affect your grade. Export your database from your DBMS, zip it and submit the zip file. Thank you!whatsapp.cc 15100224O Database Final Exam A relation with two atributes A and B satisfies the functional dependency A B Them the functional dependency B >A also holds in the relation. 1.00 tion Select one Ob. False EVIOUS PAGE
- 23. Which of the following is a group of one or more attributes that uniquely identifies a row? a. Key b. Determinant c. Tuple d. RelationWhich of the following shows the relationship between the attributes? Select one: a.Functional dependency b.Privacy dependency c.Determinant d.Completeness dependency Jump to...A composite primary key's prospective key is an attribute?
- What is a foreign key constraint? Why are such constraints important? What is referential integrity?4. _______ allow us to identify uniquely a tuple in the relation. a. Superkey b. Domain c. Attribute d. SchemaCreate the database name Company which consists of one Entity name Employee which consists of 10 attributes (ID/First Name/Last Name/CNIC/Gender/Department/Salary/Address/Age) ID should be primary key Insert at least 10 records in the Entity Employee with respect to their type. Implementation the example of stored procedure now creates the stored procedure which: Have an ability to insert the record in the table. Have an ability to delete the record in table. Have an ability to update the record in the table. Have an ability to display the record in the table.