SQL and Relation Databases - Reading Assignment

Blockchain Business Course
#942
  1. What is a row?

Record - A data set representing a single item

  1. What is a column?

Attribute - A labelled element of a tuple, e.g. “Name” or “Group”

  1. What is a table?

Relation - A set of tuples sharing the same attributes; a set of columns and rows

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#943

1.) A data set representing a single item.
2.) A possible attribute of the data sets.
3.) It merges data sets with their possible attributes, containing the compact information about the data sets displaying certain attributes.

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#944

  • What is a row?
    A collection of fields that make up a record

  • What is a column?
    a vertical group of cells within a table

  • What is a table?
    a structure that organizes data into rows and columns forming a grid

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#945
  1. A data set representing a single item.
  2. A labeled element of a tuple.
  3. A set of tuples sharing the same attributes.
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#946

  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

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#947

A row : a data set representing a single item
A column : a labeled element of a tuple, e.g. “Address” or “Date of birth”
A table : a set of tuples sharing the same attributes; a set of columns and rows|

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#948

1. What is a row?
A: A single item data set (Eg: Name)
2. What is a column?
A: Attributes of a data set (EG: Name & Age)
3. What is a table?
A: A collection of column & row data sets

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#949
  1. What is a row?
    a single thing
  2. What is a column?
    a variable
  3. What is a table?
    rows + columns
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#950

A1. A single recorded value
A2. An attribute of a value recorded in row.
A3. Set of records and arrtibutes

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#952
  1. What is a row?
    Data set representing a single item
  2. What is a column?
    A labeled element such as SSN or DOB
  3. What is a table?
    A set of columns and rows
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#953

  1. What is a row?
    Row is a record of a single item

  2. What is a column?
    Column is a attribute of a particular data element

  3. What is a table?
    Table is a set of columns and rows, like a matrice, sharing the same attributes

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#954

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

  2. What is a column?
    A labeled element of a tuple, e.g. “Address” or “Date of birth”.

  3. What is a table?
    A set of tuples sharing the same attributes; a set of columns and rows.

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#955

Row: A data set representing a single item.

Column: A labeled element of a tuple, e.g. “Address” or “Date of birth”.

Table: A set of tuples sharing the same attributes; a set of columns and rows.

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#956
  1. What is a row?
  2. What is a column?
  3. What is a table?

1- SQL term meaning data set representing a single item
2- SQL term that is a labeled element of a tuple, e.g. “Address”
3- SQL term indicating a set of tuples sharing the same attributes; a set of columns and rows

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#957
  1. What is a row?
    It’s a dataset for elements of interest (for example: “STRANDMON” see below)
  2. What is a column?
    Characteristic of the above element (for example: “Colour”, “Shape”, “Price”)
  3. What is a table?
    A table is a summary of all elements and their characteristics (for example: “Ikea furniture”)
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#958

A row is a data set representing a single item. The information contained in a row is also called a record. A column is a labeled element of an ordered list of elements. A *table is a set of elements that share the same characteristics.

If we have a table in a database which contains the personal information of our customers, that includes the name, address, phone number, age and number of items purchased, then all the information regarding a single person will be contained within a row. Every element of the information, like name, address, etc., will be contained in different columns. All the personal information about our clients will be contained within our table.

#959

Some of the most important relational database terms in the SQL language

  • Row is a record ,a dataset representing a single item.

  • Column is a attribute or field, a labeled element of a tuple, e.g.
    “Address” or “Date of birth”

  • Table is a set of tuples sharing the same field, a set of columns and rows .

#960
  1. What is a row ?

A row is a record or data set that represents a single item.

  1. What is a column?

A column is a field or labeled element of a tuple.

  1. What is a table?

A table is a relation or set of columns and rows.

#961

  1. What is a row?
    The relational database term is record. It is a data set representing a single item.
    Database normalization is a systematic process of organizing data in columns and rows. Its purposes are to cut data redundancy (to avoid anomalies) and make sure the data is stored. It is important to reduce or eliminate data redundancy as it makes it difficult for application developers to store objects in a relational database. A direct benefit of data normalization is the performance of the database systems are fast, accurate, and efficient. As a result, you can get a quick response from the database.

  2. What is a column?
    The relational database term is Attribute or Field. A labeled element of a tuple, (combinations of attributes) , e.g. “Address” or “Date of birth”
    Cardinality pertains to the uniqueness of data values within a column. Low cardinality refers to a column containing several repeated values and high cardinality represents when a column has several unique values. It is also referred to the relationships between tables. These relationships are one-to-one, one-to-many, and many-to-many. Cardinality is important because it links tables together with precision.

  3. What is a Table?
    The relational database term is Relation or Base relvar i s a set of tuples sharing the same attributes; a set of columns and rows
    Junction tables (aka Bridge Tables) are tables designed to handle many-to-many relationships between two groups. They create “junctions” between data sets, allowing associations with one another.
    An Index is a type of data structure that helps reduce the amount of time for retrieval operations on a database table. Indices give the user the ability to locate any data they seek without having to search every row in a database table by hand.

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#962
  1. the dataset of a single entry
  2. A labeled data point that is present in all rows
  3. A set of rows with the same column attributes