SQL Quiz No. 1

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| By Angel11898

Angel11898

Community Contributor

Quizzes Created: 1 | Total Attempts: 104

Questions: 15 | Attempts: 104 | Updated: Jun 25, 2023

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Questions and Answers

1.

It is the horizontal row of a cell
- A.
  
  Record
- B.
  
  Data
- C.
  
  Database
- D.
  
  Field
Correct Answer
A. Record

Explanation
A record is a horizontal row of a cell in a database. It represents a complete set of related data that is stored together. In a database table, each record contains specific information about an individual entity or item. Therefore, the correct answer is "Record".

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2.

There are three types of keys
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement "There are three types of keys" is incorrect. In reality, there are more than three types of keys. Some examples include physical keys used for locks, cryptographic keys used in encryption, and musical keys used in music theory. Therefore, the correct answer is false.

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3.

This data type allows alphanumeric characters that can hold thousands of character
- A.
  
  Text
- B.
  
  Memo
- C.
  
  Numeric
- D.
  
  None of the above
Correct Answer
B. Memo

Explanation
The correct answer is "Memo" because the memo data type allows alphanumeric characters and can hold a large amount of text, typically thousands of characters. The text data type is limited to a smaller amount of characters, usually around 255. Numeric data type is used for numerical values, not for holding text. "None of the above" is not the correct answer as "Memo" fits the given description.

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4.

SQL stands for Structural Query Language
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
SQL stands for Structured Query Language, not Structural Query Language. It is a programming language used for managing and manipulating relational databases.

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5.

There are two possible values for ORDER BY clause
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The statement is true because the ORDER BY clause in SQL allows the user to sort the result set of a query in ascending or descending order based on one or more columns. This allows for better organization and presentation of the data. Therefore, there are indeed two possible values for the ORDER BY clause: True and False, indicating whether or not the result set should be sorted.

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6.

It is the single most important statement in SQL
- A.
  
  From Clause
- B.
  
  Where Clause
- C.
  
  Select Clause
- D.
  
  Order by Clause
Correct Answer
C. Select Clause

Explanation
The Select Clause is the most important statement in SQL because it is used to retrieve specific data from a database. It allows the user to specify which columns they want to include in the query result. The Select Clause is essential in constructing meaningful and relevant queries as it determines the information that will be displayed or manipulated. Without the Select Clause, it would not be possible to retrieve specific data from a database, making it the single most important statement in SQL.

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7.

Which of the following are considered field names
- A.
  
  AMA Computer Learning Center
- B.
  
  Database1.accdb
- C.
  
  Telephone_number
- D.
  
  6508786
Correct Answer
C. TelepHone_number

Explanation
The field names in a database typically describe the type of data stored in a particular column or attribute. In this case, "Telephone_number" is a field name because it represents a specific type of data (telephone numbers). AMA Computer Learning Center and Database1.accdb are not field names as they do not describe the type of data stored. The value "6508786" is also not a field name as it represents a specific data entry rather than a description of the data.

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8.

Using * character in the select clause selects all the fields on the entire database.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The statement is incorrect. Using the * character in the select clause does not select all the fields on the entire database. It selects all the columns from the specified table or tables in the query.

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1
0
9.

You can only have one table in a database file
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement "You can only have one table in a database file" is incorrect. In a database file, multiple tables can be created and stored. Each table represents a separate entity or set of data, and they can be related to each other through keys or relationships. Having multiple tables allows for better organization and management of data within a database system.

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10.

Primary Key is a special field that establishes a relationship between two tables
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The given statement is false. A primary key is a special field in a database table that uniquely identifies each record in the table. It is not used to establish a relationship between two tables. Instead, a primary key is used to ensure data integrity and enforce uniqueness in a single table. Relationships between tables are established through foreign keys, which refer to the primary key of another table.

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11.

You can have more than one WHERE clause in an SQL statement
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
In SQL, it is possible to have more than one WHERE clause in a statement. Each WHERE clause can be used to specify different conditions that the data must meet in order to be included in the result set. This allows for more complex and specific filtering of data in SQL queries.

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12.

You can have multiple primary key on a table
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
In a relational database, a primary key is a unique identifier for each row in a table. It ensures that each row is uniquely identifiable and helps in maintaining data integrity. A table can have only one primary key, as having multiple primary keys would lead to ambiguity and violate the uniqueness constraint. Therefore, the statement "You can have multiple primary keys on a table" is false.

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13.

What symbol should be used when dealing with text in SQL
- A.
  
  Double quote (" ")
- B.
  
  Single quote (' ')
- C.
  
  Number Sign (#)
- D.
  
  No symbol
Correct Answer
B. Single quote (' ')

Explanation
In SQL, the single quote (' ') should be used when dealing with text. This is because text values in SQL are typically enclosed in single quotes to indicate that they are string literals. Using double quotes or number signs (#) may cause syntax errors or result in unexpected behavior. Therefore, the correct symbol to use when dealing with text in SQL is the single quote (' ').

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14.

Search and retrieves data from tables based on a given criteria
- A.
  
  Database
- B.
  
  Table
- C.
  
  Record
- D.
  
  Query
Correct Answer
D. Query

Explanation
A query is a command or request made to a database to search and retrieve data from tables based on a given criteria. It allows users to specify what information they want to retrieve, filter the results, and sort them in a desired order. Queries are used to extract specific data from a database, making it easier to analyze and manipulate the information.

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15.

Data is dynamic because it remains the same until it is modified by a process.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Data is not dynamic because it remains the same until it is modified by a process. This statement is incorrect. Data is considered dynamic because it can change or be modified over time, either through manual intervention or through automated processes. Data is not static and can be updated, deleted, or added to as needed. Therefore, the correct answer is False.

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Current Version
Jun 25, 2023

Quiz Edited by
ProProfs Editorial Team
Jan 26, 2016

Quiz Created by
Angel11898

SQL Quiz No. 1

It is the horizontal row of a cell

There are three types of keys

This data type allows alphanumeric characters that can hold thousands of character

SQL stands for Structural Query Language

There are two possible values for ORDER BY clause

It is the single most important statement in SQL

Which of the following are considered field names

Using * character in the select clause selects all the fields on the entire database.

You can only have one table in a database file

Primary Key is a special field that establishes a relationship between two tables

You can have more than one WHERE clause in an SQL statement

You can have multiple primary key on a table

What symbol should be used when dealing with text in SQL

Search and retrieves data from tables based on a given criteria

Data is dynamic because it remains the same until it is modified by a process.