Merge pull request #7 from GMOD/move_ddl2modules

Created db module and moved db/dbxref tables to it

chado/modules/general/general.sql

@@ -19,51 +19,4 @@ create table tableinfo (
     constraint tableinfo_c1 unique (name)
 );
 
-COMMENT ON TABLE tableinfo IS NULL;
-
--- ================================================
--- TABLE: db
--- ================================================
-
-create table db (
-    db_id bigserial not null,
-    primary key (db_id),
-    name varchar(255) not null,
---    contact_id int,
---    foreign key (contact_id) references contact (contact_id) on delete cascade INITIALLY DEFERRED,
-    description varchar(255) null,
-    urlprefix varchar(255) null,
-    url varchar(255) null,
-    constraint db_c1 unique (name)
-);
-
-COMMENT ON TABLE db IS 'A database authority. Typical databases in
-bioinformatics are FlyBase, GO, UniProt, NCBI, MGI, etc. The authority
-is generally known by this shortened form, which is unique within the
-bioinformatics and biomedical realm.  To Do - add support for URIs,
-URNs (e.g. LSIDs). We can do this by treating the URL as a URI -
-however, some applications may expect this to be resolvable - to be
-decided.';
-
--- ================================================
--- TABLE: dbxref
--- ================================================
-
-create table dbxref (
-    dbxref_id bigserial not null,
-    primary key (dbxref_id),
-    db_id bigint not null,
-    foreign key (db_id) references db (db_id) on delete cascade INITIALLY DEFERRED,
-    accession varchar(255) not null,
-    version varchar(255) not null default '',
-    description text,
-    constraint dbxref_c1 unique (db_id,accession,version)
-);
-create index dbxref_idx1 on dbxref (db_id);
-create index dbxref_idx2 on dbxref (accession);
-create index dbxref_idx3 on dbxref (version);
-
-COMMENT ON TABLE dbxref IS 'A unique, global, public, stable identifier. Not necessarily an external reference - can reference data items inside the particular chado instance being used. Typically a row in a table can be uniquely identified with a primary identifier (called dbxref_id); a table may also have secondary identifiers (in a linking table <T>_dbxref). A dbxref is generally written as <DB>:<ACCESSION> or as <DB>:<ACCESSION>:<VERSION>.';
-
-COMMENT ON COLUMN dbxref.accession IS 'The local part of the identifier. Guaranteed by the db authority to be unique for that db.';
-
+COMMENT ON TABLE tableinfo IS NULL;