text: -- Copyright [1999-2015] Wellcome Trust Sanger Institute and the EMBL-European Bioinformatics Institute
  -- Copyright [2016-2022] EMBL-European Bioinformatics Institute
  -- 
  -- Licensed under the Apache License, Version 2.0 (the "License");
  -- you may not use this file except in compliance with the License.
  -- You may obtain a copy of the License at
  -- 
  --      http://www.apache.org/licenses/LICENSE-2.0
  -- 
  -- Unless required by applicable law or agreed to in writing, software
  -- distributed under the License is distributed on an "AS IS" BASIS,
  -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  -- See the License for the specific language governing permissions and
  -- limitations under the License.
  
  # patch_71_72_b.sql
  #
  # Title: Create associated_xref table
  #
  # Description:
  #  Create table associated_xref for associating object xrefs with an associated
  #  annotation (eg Gene Ontology Annotation Extensions) given a source xref and
  #  condition.
  
  CREATE TABLE associated_xref (
  
    `associated_xref_id`             INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
    `object_xref_id`                 INT(10) UNSIGNED DEFAULT '0' NOT NULL,
    `xref_id`                        INT(10) UNSIGNED DEFAULT '0' NOT NULL,
    `source_xref_id`                 INT(10) UNSIGNED DEFAULT NULL,
    `condition_type`                 VARCHAR(128) DEFAULT NULL,
    `associated_group_id`            INT(10) UNSIGNED DEFAULT NULL,
    `rank`                           INT(10) UNSIGNED DEFAULT '0',
  
    PRIMARY KEY (associated_xref_id),
    KEY associated_source_idx (source_xref_id),
    KEY associated_object_idx (object_xref_id),
    KEY associated_idx (xref_id),
    KEY associated_group_idx (associated_group_id),
    UNIQUE KEY object_associated_source_type_idx (object_xref_id, xref_id, source_xref_id, condition_type, associated_group_id)
  
  ) COLLATE=latin1_swedish_ci ENGINE=MyISAM;
  
  
  CREATE TABLE associated_group (
  
    associated_group_id            INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
    description                    VARCHAR(128) DEFAULT NULL,
  
    PRIMARY KEY (associated_group_id)
  ) COLLATE=latin1_swedish_ci ENGINE=MyISAM;
  
  # Patch identifier
  INSERT INTO meta (species_id, meta_key, meta_value)
    VALUES (NULL, 'patch', 'patch_71_72_b.sql|associated_xref');
  
  