876 B
876 B
lec26
Some types of Database Structures
- Key-Values
Just like a standard map, we provide a key and get a value.
Maks things easy for usage but recall that our hash function is really delicate.
Because we're using a map or a set type of container.
- Document
Welcome to json/xml world. Now we just look for documents(json/xml) instead of looking for some data with a predefined structure.
- Column Family
Variant of key/value but this time we store things in columns instead of rows. Advantage here is that we can quickly search through columns for analysis type things.
- Graph
Data is a graph(wow).
We still have some key-value system to find a node in the graph but we can create edges between values to create relationships.
NoSQL
In favor of usage
- Data is not uniform
- Dataset is massive
Against
- You need consistency