SQL and Relation Databases - Reading Assignment

Blockchain Business Course
#963

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

  2. What is a Column?
    A labeled element of a tuple like “Address” or “Date of birth”

  3. What is a Table?
    A set of Tuples sharing the same attributes, a set of columns and rows.

#964

  1. A row is what COBOL would say is a “record”. Its a collection of information about one instance of thing in the database.

  2. A column is a consistent kind of information that’s available for every record in the database, even if the value is zero, undefined, or null. Users can ask for it with some expectation of having data returned and low expectations of returning an error.

  3. A table is an orderly set of information in two degrees of discrete freedom. They are typically organized by row or column and may be arbitrarily sorted, searched, or filtered by any combination of values thereof.

#965
  1. What is a row?
    Record
  2. What is a column?
    Attribute
  3. What is a table?
    Relation
#966

1- dataset repressing a single item
2-a labelled element of tuple like address, birth …etc
3-a set of tuples sharing the same attributes (set of columns and rows)

#967

  1. What is a row?

    A row is a record in a table, representing a single entry that contains data for each column in that table.

  2. What is a column?

    A column is a labeled element of a table, representing a specific attribute for all rows.

  3. What is a table?

    A table is a collection of rows and columns where rows represent records and columns represent attributes.