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The building block of a database is the record. A
record is a collection of related data treated as a single entity.
For example, a hockey trading card could be called a record: it
brings together the name, photograph, team, and statistics of one
player. Using database terms, each of these related pieces of
information is called a field: each hockey card “record?has a
name field, a photograph field, a team field, and various
statistic fields.
A collection of records that share the same fields is called a
table because this kind of information can easily be presented in
table format: each column represents a field and each row
represents a record. In fact, the word column is synonymous with
the word field, and the word row is synonymous with the word
record.
A database can contain more than one table, each with a unique
name. These tables can be related or independent from one another.
A subset of data extracted from one or more tables is called a
recordset (or a DataSet in ASP.NET). A recordset is also a table
because it’s a collection of records that share the same columns.
For example, a hockey team roster listing the names and positions
of the players could be called a recordset: it consists of a
subset of all the possible information about the players,
including goals, assists, penalty minutes, and so on. |
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