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We continue to develop our .NET Provider for OLEDB. In the new build (#1434), we have implemented the methods to obtain database metadata:

  • OleDbConnection.GetOleDbSchemaTable
  • OleDbConnection.GetSchema

GetOleDbSchemaTable

Supported schemas:

  • SchemaGuids
  • DbInfoKeywords
  • DbInfoLiterals
  • All schemas of the OLEDB Provider

Distinctions compared to standard OLEDB.NET Provider:

  • The SchemaGuids schema describes all schemas including SchemaGuids, DbInfoKeywords and DbInfoLiterals.
  • The SchemaGuids schema supports restrictions for the Schema column.

GetSchema

Supported schemas:

  • MetaDataCollections
  • Restrictions
  • DataTypes
  • ReservedWords
  • DataSourceInformation
  • CharacterSets
  • Collations
  • Tables
  • Views
  • Columns
  • Procedures
  • ProcedureParameters
  • ProcedureColumns
  • Indexes

Distinctions compared to standard OLEDB.NET Provider:

  • The MetaDataCollections schema supports restrictions for the column CollectionName.
  • The Restrictions schema supports restrictions for the columns CollectionName and RestrictionName.
  • More accurate population of the DataSourceInformation schema.
  • More accurate population of the Restrictions schema.

Implementation peculiarities

  • Caching of data from its own schemas (SchemaGuids, DbInfoKeywords, DbInfoLiterals, …).
  • Coherence of information from metadata schemas with the descriptions of the resulting rowset columns and command parameters (ensured by IBProvider).
  • Different algorithms of metadata loading for Interbase and Firebird. Including – our provider takes into account the version of the server and the version of database ODS (ensured by IBProvider).
  • Caching of OLEDB metadata schemas is carried out on the IBProvider level (see a property «schema_cache»).

Other changes

  • The OleDbSchemaGuid class added with the lists of known OLEDB schema identifiers.
  • The OleDbSchemaRestriction class added with the lists of restriction indexes for known OLEDB schemas.
  • The OleDbLiteral class added.
  • The OleDbMetaDataCollectionNames class added.
  • The number of tests and debug structures ensuring the correct work of components increased.

New examples

If you are interested in working with stored procedures grouped into PACKAGE, please take a look at the new example for our .NET Provider:

  • Creation and working with PACKAGE (C#, FB3)
  • ADO.NET provider for Firebird 3.2.0.0 is ready

    With the release of Delphi XE5, with support for iOS and Android it also brings InterBase versions of these two O.S-es, people started to question whether we can expect a version of Firebird for mobile platforms. Apparently, it will happen! Paul Beach said he already has a version of FB compiling for iOS, but it still needs testing. Anyway, the release versions for iOS / Android should not happen now, since developers are totally focused on Firebird 3 release.

    News via firebase.com.br

    Update:
    Firebird client can be build for Android
    Also on the Apple side: Paul Beach managed to cross-compile Firebird for iOS

    Ștefan Suciu announced his work on Implementing support for Firebird in Sqitch :

    I’m workingto implement support for Firebird (in the firebird branch) in Sqitch – a database change management application.

    Contributions are welcome! on Github
    https://github.com/stefansbv/sqitch/tree/firebird

    NBackup via Services API is landed in DotNet FirebirdClient

    New GSOC update for the previous week:
    Current status of the firebird-sdbc driver is:

    – (Var)Char, Numeric and Date/Time types all supported. (No support for blob/clob/array/etc. yet.)
    – Data Editing in the GUI works.
    – Data Insertion works.
    – Table and Column definition/manipulation is mostly complete, there might still be a few minor-to-major issues, indexes aren’t supported at all.
    – Usable on Linux, Mac, Windows (thanks to tml for fixing the fbembed
    library / loading on Mac).

    ps: you can check also the previous updates #11,#10,#9

    The version 3.1.1.0 of ADO.NET provider for Firebird is ready for your download!

    More info.

    The version 3.1.0.0 of ADO.NET provider for Firebird is ready for your download!

    More info.

    Paul Beach wrote on his blog :
    Based on a document written by Fulvio, a while ago, I finally spent time writing a make file that will automatically create an embedded version of Firebird that will run on MacOSX as a bundle.

    ADO.NET provider for Firebird with Entity Framework 6 support preview

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