SQL and Relation Databases - Reading Assignment

Blockchain Business Course
#422
  • What is a row?
    A list of different records or “tuples” (endless list of objects)
  • What is a column?
    A column lists the attributes of the “tuples” (objects)
  • What is a table?
    A collection of objects sharing the same attributes; a set of columns and rows
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#423
  1. What is a row?
    Is a data set representing a single item
  2. What is a column?
    Is an attribute of an item
  3. What is a table?
    Is a set of columns and rows. / A set of items sharing the same attributes
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#424

1.What is a row?
It is about a single data in the database.

2.What is a column?
This is a type of information stored. It is something like a label or an attricute which comes at the first line.
Age, Gender, Number etc.

3.What is a table?
A set of combinations of rows and columns.

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#425
  1. A row is a data-set representing a single item
  2. A column is a labeled element of a sequenced list of elements (like "address)
  3. A table is a set of ordered lists of elements that share the same attributes.
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#426
  1. What is a row? Is a single data record
  2. What is a column? It’s an attribute or labeled element
  3. What is a table? set of columns and rows
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#427
  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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#428
  1. Row is a single record
  2. Column is an attribute or field of a record
  3. Table is a set of rows and columns
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#429

1 record in the horizontal field
2 Attribute or field in the vertical field
3 makes the relationship between rows and columns

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#430
  1. A row is a record. It is a data set representing one item.
  2. A column is an attribute of field. It is a labeled element.
  3. A table is a set of columns and rows.
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#431
  1. A Horizontal data set representing a single term (record)
  2. (Attribute or field) a value of a record set (vertical)
  3. A table is a set of rows and columns.
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#432

What is a row? A row is a single record, for example a user (horizontal)
What is a column? A column is an attribute (characteristic) of a record, e.g a date of biirth, adress, hair color of a user (vertical)
What is a table A table is a set of records, a set or rows and columns.

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#433
  1. What is a row?

SQL Term (Row)
Relational Database Term = record
Description: A data set representing a single item

  1. What is a column?

SQL Term (Column)
Relational Database Term = Attribute or Field
Description: A labeled element of a tuple, e.g. “Address” or Date of Birth

  1. What is a table?

SQL Term (Table)
Relational Database Term = Relation or Base relvar
Description: A set of tuples sharing the same attributes; a set of columns and rows

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#434

1. What is a row?
It is a record which represents a single item.
2. What is a column?
It is an attribute or labelled item in the column.
3. What is a table?
It is a set of rows sharing the same columns.

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#435
  1. What is a row? A data set representing a single item. (Named Record in Relational DB)
  2. What is a column? A labeled element of a tuple. (Named Attribute or Field in Relational DB)
  3. What is a table? A set of tuples sharing the same attributes; a set of columns and rows. (Named Relation or Base Relvar in Relational DB)
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#436

SQL and Relational Databases :card_file_box:

  1. What is a row?
    A row represents a particular record within a database view. Such an entity is basically a set (= tuple) of attributes that can be uniquely identified.

  2. What is a column?
    Columns are the labelled attributes/fields that are shared by the rows in a table and whose value can differ for every individual record.

  3. What is a table?
    A table is a set of tuples/records that represents the relationship between these tuples based on their common attributes.

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#437
  1. a single data set
  2. labeled element
  3. is a a set of columns and rows
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#438

  1. Row = Record
    A data set representing a single item.

  2. Column = Attribute/field
    a labeled element of a tuple. Eg: Address or Date of Birth

  3. Table = A set of tuples sharing the same attributes, A set of columns and rows.

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#439

Reading Assignment Answers:
1.A record/data set representing single item.
2.Labeled element of a tuple.
3.A set of columns & rows sharing same attributes.

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#440

  1. What is a row?
    A record - as ingle item

  2. What is a column?
    An attribute or field

  3. What is a table?
    Relations of the rows & columns

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#441

If we imagine a table as Matrix A with elements with coordinates i, j

  1. A set of elements of the form Aaj, where a is fixed
  2. A group of data cells of the form Aib where b is fixed
  3. A table is a 2D matrix
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