1617232
Beschreibung
Mindmap von Joe Farnworth-Mayers, aktualisiert more than 1 year ago
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Erstellt von Joe Farnworth-Mayers
vor mehr als 9 Jahre
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Databases
- Data
- Big Data-+
- Big Data-+
- Data
- Big Data
- Large Sets of data
gathered from many
sources to be analysed.
- Large Sets of data
gathered from many
sources to be analysed.
- Open Data
- Large sets of data shared freely
- Anyone can access them.
- Large sets of data shared freely
- Data Security
- There is a legal
obligation to keep
data secure
- Data encryption is needed
- There is a legal
obligation to keep
data secure
- Big Data
- Flat File Databases
- Database with only one table.
- Highly
compatible
between
databases and
other
applications.
- Database with only one table.
- Structure
- Entities: Each recorded item.
- record: one row of details about an entity
- Attributes: Details about an entity
- field: columns used to
capture attributes
- table: a set of fields and records.
- primary key: a unique number for an entity.
- Entities: Each recorded item.
- What?
- A system to store data in
an orginized way.
- It is easier to understand if it is
presented in a clear layout
- A database needs to be
reliable, consistent and
have a clear structure.
- A system to store data in
an orginized way.
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