Which of the following is NOT a property of a relation? Tick all that apply. [ ] Each cell in a relation cannot contain multiple values. [ ] Order of tuple is important. [ ] The name of a relation is unique. [ ] Values of an attribute from the same domain.

Q: What are three indications that a surrogate key should be constructed for the primary key of a…

A: Surrogate key is unique key and also called as synthetic primary key. Surrogate key holds anonymous…

Q: Explanation of three cases when it makes sense to create a secondary key instead of the main one in…

A: The three cases when it makes more sense to create a secondary key instead of using the main key in…

Q: ID name Courses M semester Teaches N ID name Professors Convert the above ER diagram to relations in…

A: SOLUTION -From the above Entity Relationship Diagram, we can identify three tables. They are1)…

Q: Atuple in a database is: A A field. A record, An entity. A relation C D

A: A tuple is a row also known as one record stored in table.

Q: Type ISBN eBook RelationName2 (AttrName1) Primary key {AttrName1) Price Book N Order Hardcopy Date…

A: Here are the resulting relation tables from the given E-R diagram:Table Book:Primary Key:…

Q: Which one of the following statement is not true: A complex object is formed by combining other…

A: The above question is solved in step 2 :-

Q: Describe three situations in which a substitute key for the main key of a relation should be…

A: Given: Indicators that point to the existence of a surrogate keyThere are three circumstances that…

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: There is only one error in the above code and that is the ALTER TABLE command on the address table.…

Q: It is important to build a hybrid merge-join technique in order to accomplish the task of combining…

A: The hybrid merge-join technique is a method used in database systems to combine two relations that…

Q: • Students(stulD, lastName, firstName, major, credits) • Faculty (facID, name, deptName, rank) •…

A: The original query attempts to retrieve the class numbers of all classes taught by a faculty member…

Q: Draw the arrow diagram for the following relation. The domain of relation is a group of four friends…

A: SOLUTION -     Given that in a given domain which consists of four friends, there is a relation H.…

Q: Assume a user creates a new relation r1 with a foreign key pointing to another relation r2. What…

A: If a user creates a new relation r1 with a foreign key pointing to another relation r2, the user…

Q: UNION, INTERSECT, and MINUS work properly only if relations are union-compatible, which means that…

A: The given statement is: Union, intersect and minus work properly only if relations are…

Q: 5.6 LAB - Implement independent entity (Sakila) Implement a new independent entity phone in the…

A: First check whether phone_id column exists in your customer, staff, and store table or not. If…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.