kv

kv is a simple key-value store written in Prolog with a tagging system.

To Run

1. Make sure you have Prolog installed.
2. Run prolog.
3. Enter the following command to load the key-value store:

   consult('kv.pl').

4. Run another instance of prolog.
5. Enter the following on the second instance to start the client:

consult('client.pl').

Example Usage

1. POST: Store a key-value pair:

   post_kv([key], [value]).

2. GET: Retrieve the value for a key:

   get_kv([key], Result).

3. DELETE: Remove a key-value pair:

   delete_kv([key]).

4. TAG: Add a tag to a key-value pair:

   tag_kv([key], [tag]).

5. UNTAG: Remove a tag from a tagged key-value pair:

   untag_kv([key], [tag]).

6. TAG_QUERY: Retrieve a list of keys corresponding to pairs that match the query.

   tag_query_kv([query], Result).

   The query can be modified by three operators:

   • +: Intersection between two sets
   • |: Union between two sets
   • -: Subtracting the second set from the first