Data Independence

(Information Science Master) Lecture on Databases

• The idea that applications and databases should be separated through an interface.
  • Data should be usable persistently, even as applications change over time.
• A highly important concept.
• Nowadays, it feels obvious.
  • In the past, applications and databases were not separated.
  • As a result, if an application became unusable, the data in the database would also become inaccessible.
  • This was problematic, so efforts were made to separate the data model, among other things.