- Main categories of
the NOSQL systems:
- Key-value based systems
- Data model used is
(key, value):
- Index on the
key field for
fast access
- The user can store any data in the value part
- Data model used is
(key, value):
- Document based systems
- Text documents in
semi-structured format
(e.g., JSON)
- User can
specify an
index on
a certain type of
field in the
document\
- Fast access (search) to documents uses the available indexes
- Text documents in
semi-structured format
(e.g., JSON)
- Column based systems
- Need more info
- xxxxxxx
- Graph database
systems
- Data is represented as
graphs
- Related nodes can be found by traversing the graph
- Data is represented as
graphs
- Key-value based systems
- Hybrid systems:
- Some NOSQL system use features from 2 different main types of NOSQL systems