SQL and Relation Databases - Reading Assignment

Blockchain Business Course
#762
  1. What is a row?
    Data set representing a single item. The term used by a relational database is “record.”
  2. What is a column?
    A labeled element of a data structure.
  3. What is a table?
    A set of data structures (tuples) sharing the same attributes.
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#763
  1. A row is a dataset representing 1 item
  2. A column is a labeled element
  3. A table is an organized set of rows and columns
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#764

  1. What is a row?
    A data set representing a single term

  2. What is a column?
    A dataset of a labeled elements

  3. What is a table?
    A two dimensional dataset consisting of multiple rows and columns

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#765
  1. A row is a data set representing a single item.
  2. A column is a labelled element of a tuple.
  3. A table is a set of columns and rows.
1 Like
#766
  1. What is a row?

A row is one or more attributes that reference a single entity. This is also called a record.

  1. What is a column?

A column is an attribute of an entity

  1. What is a table?

A table is a collection of rows and columns (aka: a collection of entities that share the same attributes)

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#767

  1. A row is a data set representing a single item.

  2. A column is a labeled element of a tuple.

  3. A table is a set of both columns and rows.

I have a question for you in return: what is a tuple?

Thanks!

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#768

a tuple is one record (one row). The information in a database can be thought of as a spreadsheet, with columns (known as fields or attributes) representing different categories of information, and tuples (rows) representing all the information from each field associated with a single record.

Carlos Z

#769

  1. What is a row?
    A record representing a single item which type corresponds to its attribute.

  2. What is a column?
    A column is a specific attribute given to a vertical set of records.

  3. What is a table?
    A table is a set of both rows and columns a.k.a. records and attributes.

1 Like
#770

  1. A row, also called a tuple, is a single data set within a table.

  2. A column, also called an attribute, is a labeled element of a tuble (row).

  3. A table, also called a relation, is a set of rows and columns where all rows share the same columns.

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#771
  1. A row is a data set representing a single database item. E.g. a user.
  2. A column is an attribute of database items. E.g. a users name and address.
  3. A table is a set of rows and columns. E.g. a collection of users with all their corresponding attributes.
1 Like
#772
  1. A row is a data representing a single item.
  2. A column is a labeled element of a tuple: address or date of birth.
  3. A table is a set of tuples sharing the same attributes - a set of columns & rows.

The systematic process of organising data in columns & rows is called normalisation.
Its purposes are to cut data redundancy (avoid anomalies) & make sure the data is stored. This is important because it is difficult for application developers to store objects in a relational database.
Normalisation establishes performance of the database as fast, accurate & efficient. So we can get quick response from it.

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#773
  1. A record, specific entry.
  2. It is a specific attribute.
  3. A database table is just where you organize your data, with a relationship between records and attributes.
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#774

  1. What is a row?
    A row or Record in SQL terms is a data set that represents a single item - e.g. User

  2. What is a column?
    A column or Attribute (or Field) in SQL terms is/are attribute/s of a Record (row) - e.g. User’s Birthdate, User’s address, User’s Parents

  3. What is a table?
    A table or Relation (or Base relvar) in SQL terms is a set of Records (rows) sharing the same Attributes (columns)

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#775
  1. A row is a horizontal data set, for example for a specific date or user name.

2.A column is a vertical element or collection of data for different data sets (eg user or date) and each row usually covers a specific category (eg temperature, name, date of birth)

  1. A table is a collection of rows and columns sharing the same attributes
2 Likes
#776

  1. A row on a database is essential an entry with a value. For example, if the database was a list of people and their personal information, a row would be 1 person, with all of their associated information.

  2. A column is an attribute of the database. For the example of the database of the list of people and their personal information, a column would be all of the entries phone numbers, or all of their addresses. The column is essentially a category or header.

  3. A table is a subset of the entire database, with columns representing the attributes of entries, and rows representing each individual entry. A database could have several tables depending on the size of the application, and the data that is required to present to the client.

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#777
  1. A data set
  2. An attribute of said data set
  3. A set of columns and rows displaying data and attribute
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#778

  1. A Record - A data set representing a single term

  2. A Attribute (or field) - A labeled element of a tuple, e.g. “Address” or “Date of Birth”

  3. A Relation (or Base Relvar) - A set of tuples sharing the same attributes; a set of columns and rows

1 Like
#779

1) What is a row?
A record of a single item.

2) What is a column?
A labeled element of a single item

3) What is a table?
A table is a set of rows and column, or a set of single items who share the same attributes

1 Like
#780
  1. What is a row?

A row is a record that represents the data of a single item

  1. What is a column?

A column it’s an attribute assigned to an item

  1. What is a table?

A set of records and their attributes (rows and columns) represent a table

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#781

  1. A raw is data set for a single item

  2. A column is a single attribute from a dataset

  3. A full set of records or datasets with all attributes.

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