Relational Data Model & SQL

Relational Data Model & SQL

11th Grade

20 Qs

quiz-placeholder

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Relational Data Model & SQL

Relational Data Model & SQL

Assessment

Quiz

Computers

11th Grade

Medium

Created by

Joseph Ighosiohwonoja

Used 1+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Harper is trying to understand the relational data model in her database class. What is the relational data model?

A data model that organizes data into tables (relations) with defined relationships between them.

A method for storing data in a hierarchical format without tables.

A data structure that uses key-value pairs for data storage.

A model that organizes data into graphs with no defined relationships.

Answer explanation

The relational data model organizes data into tables (relations) where each table can be linked through defined relationships, making it easy to manage and query data effectively.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

David is trying to understand the structure of a relational database. Can you help him define what a table is in this context?

A table is a collection of unrelated data points.

A table is a graphical representation of data in a relational database.

A table is a single row of data in a relational database.

A table is a structured collection of data organized in rows and columns in a relational database.

Answer explanation

A table in a relational database is a structured collection of data organized in rows and columns, allowing for efficient data management and retrieval. This definition distinguishes it from unrelated data points or single rows.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a classroom, Elijah is learning about databases. He asks his teacher, "What is a tuple in a relational database?"

A tuple is a single row of data in a relational database table.

A tuple is a command used to query a database.

A tuple is a type of database index.

A tuple is a collection of multiple tables in a database.

Answer explanation

A tuple in a relational database refers to a single row of data within a table, representing a unique record. This distinguishes it from other options, which describe different database concepts.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aiden is learning about databases in his computer science class. Explain the term 'field' in a table.

A field in a table is a type of database that stores all data.

A field in a table is a row that contains multiple records.

A field in a table is a visual representation of data in graphs.

A field in a table is a column that contains specific data attributes for each record.

Answer explanation

A field in a table refers to a column that holds specific data attributes for each record, distinguishing it from rows or visual representations. This definition accurately describes how data is organized in a database table.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aiden is analyzing a database for his project. What does the degree of a table refer to?

The total number of rows in a table.

The type of data stored in each column.

The primary key of the table.

The number of attributes (columns) in a table.

Answer explanation

The degree of a table refers to the number of attributes (columns) it contains. This is a fundamental concept in database design, distinguishing it from the number of rows or the type of data stored.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nora is studying relational databases in her computer science class. She wants to understand the concept of cardinality.

Cardinality defines the uniqueness of data values in a column of a relational database.

Cardinality is the process of indexing data in a relational database.

Cardinality indicates the total number of rows in a database table.

Cardinality refers to the number of tables in a database.

Answer explanation

Cardinality in relational databases refers to the uniqueness of data values in a column. It helps determine how many distinct values exist, which is crucial for understanding data distribution and relationships.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Luna is studying computer science and comes across a term frequently used in databases. What does SQL stand for?

Structured Query List

Structured Query Language

Standard Query Language

Simple Query Language

Answer explanation

SQL stands for Structured Query Language, which is the standard language used for managing and manipulating databases. The other options are incorrect interpretations of the acronym.

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