External database t implement tree like / hash map structure

Question

What external database can I use to work with my java application except Microsoft Access? I need a tree like structure or a hashmap and not relational tables.

XML is generally well-suited to tree-like structures – wakjah Mar 15 '14 at 18:53 — wakjah, Mar 15 '14 at 18:53
@wakjah OP asking about data bases – Kick Mar 15 '14 at 18:54 — Kick, Mar 15 '14 at 18:54

score 1 · Answer 1 · answered Mar 15 '14 at 18:56

Well, relational tables can be used to do what a tree or a hashmap does, very easily. So something like MySQL or PostgreSQL could easily meet your needs.

If you really want a treelike/hashmap-like database, look at MapDB. It's very fast, and provides both trees and hashmaps.

score 0 · Accepted Answer · answered Mar 15 '14 at 19:00

0

For HashMap like i.e. Key,Value pair -> MongoDB would be a good choice since you store documents in it in BSON (Binary JSON) structure.

For Tree/Graph like structures -> Neo4j would be a good choice I guess.

answered Mar 15 '14 at 19:00

Ajay George

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External database t implement tree like / hash map structure

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