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SPECIFICATIONS.md

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Specifications

Stores

  • Node - 13 bytes
in_use label_id first_rel_id first_prop_id
1 byte 4 bytes 4 bytes 4 bytes
  • Relationship - 33 bytes
in_use start_node end_node label_id start_prev_id start_next_id end_prev_id end_next_id first_prop_id
1 byte 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes
  • Label - 5 bytes
in_use dynamic_id
1 byte 4 bytes
  • Property - 13 bytes
in_use key_id value_id next_prop_id
1 byte 4 bytes 4 bytes 4 bytes
  • Dynamic Data - 32 bytes
real data length data next_chunk_id
1 byte 27 bytes 4 bytes

Types

  • Int - 4 bytes
  • Bool - 1 byte
  • Str - depends on the length

Graph Engine API

Following graph operations are supported:

  • Creation of graph
  • Creation of nodes, relationships with label and properties
  • Match (selection) of nodes, relationships, labels and all graph objects together
  • Deletion of nodes and relationships
  • Addition of new properties to nodes adn relationships

Query Language

Graph Database not4oundQL supports the following queries:

create graph: label
create node: label
create node: label key:value
create node: label key:value key:value key:value
create relationship: label from label1 to label2
create relationship: label from label1 to label2 key:value
create relationship: label from id:0 to id:1 key:value
match node: label
match node: id:0
match relationship: label
match relationship: id:1
match node: key=value
match node: key<value
match relationship: key>=value
match graph: label
delete node: id:0
delete relationship: id:0