2 The bioperl-db package contains interfaces and adaptors that work
3 with a BioSQL database and serialize and de-serialize Bioperl
6 ===================================================================
7 Information about BioSQL and bioperl-db
8 ===================================================================
10 This project was started by Ewan Birney with major work by Elia Stupka
11 and continued support by Hilmar Lapp and the Bioperl community. It's
12 purpose is to create a standalone sequence database with little
13 external dependencies and tight integration with Bioperl. Support for
14 more databases and bindings in Java and python by Biojava and
15 Biopython projects is welcomed, and a working prototype was one of
16 the accomplishments of the February 2002 hackathon in South Africa.
17 All questions and comments should be directed to the bioperl list
18 <bioperl-l@bioperl.org> and more information can be found about the
19 related projects at http://www.bioperl.org and http://www.open-bio.org.
21 I. Scripts located in the scripts/ directory:
23 biosql/load_seqdatabase.pl - a very flexible script to load
24 sequences into a BioSQL database
25 biosql/bioentry2flat.pl - dump sequence data into rich sequence
26 format flatfile from a BioSQL database
27 biosql/load_ontology.pl - load GO or SOFA ontology data into
29 biosql/merge-unique-ann.pl - script used by load_seqdatabase.pl,
30 it merges features and annotations
31 biosql/update-on-new-date.pl - script used by load_seqdatabase.pl,
32 it will update based on date
33 biosql/update-on-new-version.pl - script used by load_seqdatabase.pl,
34 it will update based on version
35 biosql/cgi-bin/getentry.pl - example CGI script that fetches from
37 biosql/clean_ontology.pl - "cleans" an ontology in a BioSQL
38 database without foreign keys
39 biosql/del-assocs-sql.pl - script used by load-seqdatabase.pl,
40 removes annotations and features
41 biosql/freshen-annot.pl - script used by load-seqdatabase.pl,
42 removes annotations and features
43 biosql/load_interpro.pl - deprecated
44 biosql/terms/add-term-annot.pl - load ontology terms read from a file
45 biosql/terms/importrelation.pl - load relations between ontology
47 biosql/terms/interpro2go.pl - load from interpro2go file
48 corba/caching_corba_server.pl - setup a corba sequence caching server
49 corba/test_bioenv.pl - test the bioenv of a running server
50 corba/bioenv_server.pl - setup a CORBA sequence server
52 There is also a script called scripts/load_ncbi_taxonomy.pl in the
53 BioSQL package that loads taxonomic data from NCBI. Most users use
54 this script to load the NCBI taxonomy into their Biosql databases
55 before loading sequences with load_seqdatabase.pl.
57 II. Some background information and how it all works:
59 The adaptor code in Bio::DB and Bio::DB::BioSQL was completely
60 refactored and architected from scratch since the previous branch
61 bioperl-release-1-1-0. Meanwhile almost everything works. The
62 following things are unsupported or do not work yet:
65 - round-tripping fuzzy locations (they will be stored according
66 to their Bio::Location::CoordinatePolicyI interpretation)
67 - Bio::Annotation::DBLink::optional_id
69 To understand the layout of the API and how you can interact with the
70 adaptors to formulate your own queries, here is what you should know
71 and read (i.e., read the PODs of all interfaces and modules named
74 1) Bio::DB::BioDB acts as a factory of database adaptors, where a
75 database adaptor encapsulates an entire database, not a specific
76 object-relational mapping or table. It is similar Bio::SeqIO in
77 bioperl, where you specify a format and get back a parser for that
78 format. Here you specify the database and get back a persistence
79 factory for that database. Note that the only database really
80 supported right now in this framework is BioSQL.
82 2) The persistence factory returned by Bio::DB::BioDB->new() will
83 implement Bio::DB::DBAdaptorI. It allows you to obtain a persistence
84 adaptor for an object at hand, and to turn an object into a persistent
87 3) A persistent object will implement Bio::DB::PersistentObjectI. A
88 persistent object can be updated in and removed from the database. It
89 also knows about its primary key in the database once it has been
90 created or found in the database. A persistent object will still
91 implement all interfaces and all methods that the non-persistent base
92 object implements. E.g., a persistent sequence object will implement
93 Bio::DB::PersistentObjectI and Bio::PrimarySeqI (or Bio::SeqI).
95 4) A persistence adaptor will implement Bio::DB::PersistenceAdaptorI.
96 Apart from actually implementing all the persistence methods for
97 persistent objects, a persistence adaptor allows you to locate
98 objects in the database by key and by query. You can
99 find_by_primary_key(), find_by_unique_key(), find_by_association(),
100 and find_by_query(). The latter allows you to formulate object queries
101 as Bio::DB::Query::BioQuery objects and retrieve the matching objects.
103 5) The guiding principle for the redesign of the adaptors was to
104 separate business logic from schema logic. While business logic is
105 largely driven by the object model (hence, by the bioperl object
106 model) and therefore is mostly independent from the schema, but
107 specific to the object model, the schema logic is driven by and
108 specific to the relational model. The schema logic will therefore need
109 to differ from one schema to another and even from one schema flavor
110 to another for very similar relational models, whereas the business
111 logic is unaffected by this.
113 This had two consequences. First, the user interacts with the adaptors
114 without knowing anything about the specific schema behind it. All
115 interaction takes place in object space. You construct queries by
116 specifying object slots and the values they should have or
117 match. Joins and associations are also specified on the object level
118 (cf. Bio::DB::Query::BioQuery). Internally, the respective drivers for
119 the particular schema translate those queries into schema-specific SQL
122 The second consequence was that every persistence adaptor is divided
123 into two layers, the persistence adaptor itself which does not contain
124 a single SQL phrase or query, and its schema-specific driver which
125 implements those functions which cannot be accomplished without
126 actually doing the concrete object-relational mapping.
128 ===================================================================
129 Information about Bio::DB::Map modules and database interface
130 ===================================================================
132 These modules have been deprecated and are no longer in the distribution.