Relational Database EXAMS BUNDLE| Questions with 100% Correct Verified Answers

Using the BETWEEN operator, filter the invoice table to find the invoices dated between and . Identify the third customer ID. - ANSWER 21 Which of these SELECT statements would successfully display exactly three columns of data from the invoice table? - ANSWER SELECT customer_id, invoice_id, in...

Given the employee table and the data that it contains, and assuming that you have the rights to modify the table, which of the following ALTER TABLE statements would work without errors? - ANSWER ALTER TABLE employee ALTER COLUMN email TYPE TEXT; Given the tables provided, which of the followin...

Describe the DATA Hierarchy - ANSWER Field- Attributes about an entity Record- Related group of fields File- related group of records Database- related group of a files What are the advantages of Database Systems - ANSWER Data Integration- Combined and accessible Data Sharing-easily to access ...

What is a Relational Database? - ANSWER a collection of two or more tables that are joined using relationships a DBMS stands for - ANSWER database management system examples of the database - ANSWER a phone contact list, a personal diary, a University Students record

When a table field contains a null value, that value may be understood to be ______. - ANSWER unknown A conceptual, high-level description of the structure of a database is contained in: - ANSWER an entity-relationship (ER) model. Amanda is designing a relation. As she starts to consider sample ...

What is an entity - ANSWER An Entity Is a Thing of Interest Within the UoD About Which Information May Be Collected, Manipulated, and Stored. An Entity Is a Thing That Has Real (Commonly Perceived) and Individual (Uniquely Identifiable) Existence. Entity and Object Used to Have the Same Meaning. ...