Databases
A database
is a collection of data stored in an organised way. Databases can be
computerised or paper based, an example of a paper based database is a notebook
or the yellow pages. Computerised databases include, school records, hospital
records and search engines. A computerised database is easier to store and you
can search records quickly. A paper based database works even without
electricity and is cheaper to make. A database is suitable for storing
information as it can sort millions of records into fields so it is easier to
find the information you need.
Table- A
table displays all of the records in a database
Record- All
of the information held in a database on a particular person or object
Field- All
the information held in a specific category in a database
A flat-file
database is where all the information is stored in one large table. A
relational database is where all the data is split up into related groups. Data
duplication is where data is needlessly typed in again when it is already on
the database. A flat-file database is not suitable for all scenarios as you may
not need all of the fields of certain tasks, it is sometimes better to just
have a few specific ones.
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