Devart Blog

Oracle

ODAC Integration With dbForge Studio for Oracle

Posted by on November 6th, 2014

Database application development is usually divided into two stages: database design and application writing. Oracle Data Access Components for Delphi (ODAC) allow implementation of work with Oracle server, and dbForge Studio for Oracle – database design and administration. Now, for convenient development, integration with dbForge Studio for Oracle is implemented in ODAC.

To enable integration to dbForge Studio for Oracle, in the Delphi main menu select ODAC → Database Tools → dbForge Studio for Oracle Integration.

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Oracle 12c Support and More New Features in New Versions of Devart Products

Posted by on October 17th, 2013

Devart releases new versions of its products: LinqConnect ORM solution, dotConnect ADO.NET data providers, and ORM designer – Entity Developer. The main new feature in dotConnect for Oracle, LinqConnect, and Entity Developer is the support for the latest release of Oracle Database – Oracle 12c. Additionally, dotConnect data providers offer you Sync Framework support, improved PgSqlDump component, load balancing support in dotConnect for MySQL, and other features. This article describes the new features in details.
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Enhanced Entity Framework Spatials support for Oracle, MySQL and PostgreSQL

Posted by on July 18th, 2013

Entity Framework v5 and v6 support spatial data types. They are represented as two DbGeometry and DbGeography data types from System.Data.Entity.dll in .NET Framework 4.5 (Entity Framework 5) or from EntityFramework.dll (Entity Framework 6). We have already supported Entity Framework Spatials for Oracle database (see Using Entity Framework Spatials with Oracle Spatial and SharpMap). In the new versions of our providers we have improved Entity Framework Spatials support for Oracle and added spatials support for MySQL and PostgreSQL.
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Using Entity Framework Spatials with Oracle Spatial and SharpMap

Posted by on November 29th, 2012

Note

The information in this article is partially outdated. For the newer information see the Enhanced Entity Framework Spatials support for Oracle, MySQL and PostgreSQL article.

Spatials Overview

Entity Framework v5 introduces spatial data types support. They are represented as two new DbGeometry and DbGeography data types from System.Data.Entity.dll in .NET Framework 4.5.

Many our Oracle users use Oracle Spatial functionality in their projects. Before Entity Framework v5 there was no easy way to use Oracle Spatial with Entity Framework, though users of PostgreSQL, PostGIS, and SharpMap could use this cumbersome and limited workaround. This workaround was even harder to use with Oracle Spatial and was almost not used because of numerous limitations.

Now Entity Framework v5 changes the situation, and Devart dotConnect for Oracle provides the best possible support for Entity Framework Spatials and Oracle Spatial. It includes new versions of Devart.Data.Oracle.Entity.dll and Devart.Data.Oracle.Entity.Migrations.dll assemblies built for .NET Framework 4.5 (Entity Framework v5) and the new unsigned Devart.Data.Oracle.Entity.SharpMap.dll assembly for SharpMap library support.
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Adapting Diagram File to Another Database

Posted by on October 19th, 2012

Some of our users have faced the situation when they need to change the connection details of the existing Database Diagram file.

Let’s assume the situation when you have several databases with identical schemas which are only located on different MySQL servers and you have created a database model that was saved in a Database Diagram file. Now, you want to avoid redesigning the database model from scratch and only reassign the existing database model to another MySQL server. (more…)

Using Oracle Full-Text Search in Entity Framework

Posted by on July 5th, 2012

Introduction

Oracle database supports an advanced functionality of full-text search (FTS) called Oracle Text, which is described comprehensively in the documentation:

We decided to meet the needs of our users willing to take advantage of the full-text search in Entity Framework and implemented the basic Oracle Text functionality in our Devart dotConnect for Oracle ADO.NET Entity Framework provider.
For working with Oracle Text specific functions in LINQ to Entities queries, the new OracleTextFunctions class is used, which is located in the Devart.Data.Oracle.Entity.dll assembly. It enables working with such Oracle Text functions as:

  • CONTAINS
  • CATSEARCH
  • MATCHES
  • SCORE
  • MATCH_SCORE

To call Oracle Text specific stored procedures of the CTX_DDL package, the OracleCtxDdlPackage class is used, which is located in the Devart.Data.Oracle.Entity.dll assembly.
To customize Code-First Migrations with the purpose of creating and deleting Oracle Text specific indexes, the CreateIndexConfiguration and DropIndexConfiguration classes are used, which are located in the Devart.Data.Oracle.Entity.Migrations.dll assembly.
This article deals with the following:

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Entity Framework Code-First Migrations support for Oracle, MySQL, PostgreSQL and SQLite

Posted by on February 13th, 2012

ADO.NET EF providers Devart dotConnect for Oracle, dotConnect for MySQL, dotConnect for PostgreSQL, and dotConnect for SQLite implement support for Entity Framework 4.3 Beta 1 (Entity Framework Code-First Migrations). To use it in your applications, you need to download and install the corresponding Entity Framework NuGet package first. You can read about Entity Framework Code-First Migrations functionality in the corresponding MSDN articles. (more…)

Using Oracle Optimizer Hints in Entity Framework

Posted by on January 23rd, 2012

With each new version of our Devart dotConnect for Oracle ADO.NET Entity Framework provider we pay special attention to improving its performance and configurability. It is pertinent to note some recent improvements: batch updates and flexible customization of Oracle Entity Framework provider behaviour. And now we are glad to present Oracle optimizer hints support in Entity Framework – a new feature for flexible tuning of SQL queries, generated by a user application.

Oracle Optimizer Hints

Oracle supports more than 60 different Oracle optimizer hints. You can see the complete list of Oracle optimizer hints and recommendations on their use in the Oracle Database documentation.

It is better to perform query optimization in external application, such as Devart dbForge Studio for Oracle, or any other tool for Oracle that you prefer. Queries, generated by Entity Framework, can be traced with dbMonitor and then copied and pasted to your SQL development application, where you can evaluate query performance, study execution plan, and choose optimizer hints to use. (more…)

Devart is glad to release the new improved version of dbForge Studio for Oracle, v 3.1

Posted by on December 7th, 2011

We’ve analysed user feedbacks received after the release of the completely redesigned dbForge Studio and defined prior points for further development of the product.

As a result we’ve devoted the new release of dbForge Studio for Oracle to improving the possibilities for users who work with PL/SQL code and data. And in addition we’ve improved the application performance and added support for Win-x64 platform. (more…)

Workflow Foundation Support in dotConnect for Oracle

Posted by on October 24th, 2011

We continue to extend the capabilities of dotConnect for Oracle with new features. Recently we have started to implement Workflow Foundation support features in dotConnect for Oracle. First we have implemented Oracle Workflow Instant Store support. This feature allows workflows to persist their state information in the Oracle database. dotConnect for Oracle provides the scripts for creating schema to store workflow instance state information in and the OracleWorkflowInstanceStore class that is used to persist workflow instance state information.

Currently only Enabling Persistence for Self-Hosted Workflows that use WorkflowApplication is supported. To use Oracle Workflow Instance Store you need Oracle server 9 or higher. To know how to enable Persistence for Self-Hosted Workflows read our documentation.

Recently we have added the OracleTrackingParticipant class to support Workflow Tracking. OracleTrackingParticipant class. This class allows you to subscribe to tracking records, reflecting key events during the workflow execution, and store these records to an Oracle database. dotConnect for Oracle provides the scripts for creating schema to store TrackingRecord object information. To know how to use the OracleTrackingParticipant read our documentation.