Introduction to Relational Databases (RDBMS) Quiz Answer

Introduction to Relational Databases (RDBMS) Week 01 Quiz Answer

Graded Quiz 01: Fundamental Relational Database Concepts

Q1. Data can be classified by the level and rigidity of its structure. Which data type is often stored in NoSQL databases?

  • Structured data
  • Regulated data
  • Semi-structured data
  • Unstructured data

Q2. Which of the following is a type of Information models?

  • Hierarchical
  • Root
  • Tree
  • Organization

Q3. True or False – In an Entity-Relationship diagram, attributes are connected to multiple entities.

  • True
  • False

Q4. When creating a table from an ERD, the entity becomes the table. What do the attributes become?

  • Cells
  • All of the above
  • Columns
  • Rows

Q5. Which data type only holds 1 bit of information; a 0 or a 1?

  • LOB
  • Boolean
  • Binary string
  • XML

Graded Quiz 02: Introducing Relational Database Products

Q1. What role does database replication play in a distributed database architecture?

  • High availability
  • Improved performance
  • Disaster recovery
  • All of the above

Q2. Which of the three main classes of database users are more likely to use Object Relational Mapping (ORM) in their workloads?

  • Data Engineers
  • Data Scientists
  • Application Developers
  • Database Administrators

Q3. MySQL supports multiple storage engines. Which of the following supported storage engines use table-level locking?

  • InnoDB
  • NDB
  • MyISAM
  • None of the above

Q4. PostgreSQL is an object-relational database management system. What does the object part mean for PostgreSQL?

  • Database management
  • Supports inheritance and overloading
  • Uses Postgres source code
  • Supports high availability and scalability

Q5. A Relation is a table made up of columns and rows. Columns are attributes or fields. What are rows?

  • Data values
  • Struct
  • Tuples
  • None of the above

Introduction to Relational Databases (RDBMS) Week 02 Quiz Answer

Graded Quiz 01: Creating Tables and Loading Data

Q1. Which of the following four steps for loading data with the Load Data utility involves authenticating to the storage?

  • Define
  • Finalize
  • Target
  • Source

Q2. You create a new table in the COR38310 schema and name it Engineers. What is the fully qualified name for this table?

  • COR38310/Engineers
  • Engineers
  • Engineers.COR38310
  • COR38310.Engineers

Q3. Multiple file formats are supported by most databases. Which of the following common formats includes CSV files? 1

  • Non-delimited ASCII (ASC)
  • Delimited ASCII (DEL)
  • JavaScript Object Notation (JSON)
  • PC Integration exchange (PC/IXF)

Q4. True or False – The Primary Key uniquely identifies each row in a table.

  • True
  • False

Q5. What are DML statements sometimes referred to as?

  • Modifier
  • CRUD

Graded Quiz 02: Designing Keys, Indexes, and Constraints

Q1. What clause of the CREATE TABLE statement do you use to create a primary key?


Q2. What do you create that automatically creates an index?

  • Table
  • Foreign key
  • None of the above
  • Primary key

Q3. Which of the following constraints identifies each tuple (or row) in a table?

  • Check constraint
  • Entity integrity constraint
  • Domain constraint
  • Positive constraint

Q4. True or False: All relational databases use the concept of instances.

  • True
  • False

Q5. What are the requirements that a table must meet to be in first normal form (1NF)? 1 point

  • The table must already be in third normal form (3NF) and second normal form (2NF).
  • Each table must contain no more than three columns.
  • The table must have a Primary Key.
  • Each row must be unique, and each cell must contain only a single value.

Introduction to Relational Databases (RDBMS) Week 03 Quiz Answer

Graded Quiz 01: MySQL

Q1. In MySQL Workbench, which page in the UI do you use to inspect the objects in your database?

  • Visual Data Editor
  • Object Browser
  • Administration
  • Schemas

Q2. When creating a MySQL database using phpMyAdmin, at which point in the process do you select the encoding method for the data?

  • When you name the new database.
  • When you add tables to the database.
  • When you are shown a summary of the structure of the new table.
  • When you define the columns in the table.

Q3. Which methods of populating MySQL database tables is best for small amounts of data? Select two answers

  • Manually enter the rows using the phpMyAdmin interface.
  • Insert the rows from a data file.
  • Restore the rows from a backup.
  • Run SQL INSERT statements to enter the rows.

Q4. When comparing primary keys to foreign keys, which of the following statements only describe foreign keys?

  • Must be unique within the table.
  • Are always indexed.
  • Are related to a unique primary key.
  • Cannot contain nulls.

Q5. Which tool should you use if you want to administer MySQL from a graphical web interface?

  • MySQL Workbench
  • mysqladmin
  • mysql
  • phpMyAdmin

Graded Quiz 02: PostgreSQL

Q1. Which tool can you use to both design and create a Postgres database?

  • psql
  • Query Tool
  • ERD Tool
  • pgAdmin

Q2. When using the pgAdmin Restore command, which of the following items are recreated in the database?

  • Data
  • Data types
  • Tables
  • Passwords

Q3. What is a main difference between regular views and materialized views?

  • Regular views are saved for future use.
  • Regular views can improve performance.
  • Regular views are often stored in memory.
  • You can insert, update, or delete data in regular views.

Q4. When creating a new table in a database using pgAdmin, on which tab of the Create Table dialog box do you specify data types?

  • Constraints
  • Columns
  • Parameters
  • General

Q5. What SQL statement do you use to define a view in PostgreSQL?

  • JOIN
  • VIEW
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