Cassandra ADO.NET Provider
 
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Cassandra ADO.NET Provider

SQL-based Access to Cassandra through ADO.NET for your custom .NET applications and SSAS.

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The Cassandra ADO.NET Data Provider enables user to easily connect to Cassandra data from .NET applications. Connect .NET applications with the Cassandra real-time NoSQL cloud database service. Use Apache Cassandra as the big data backend that powers your .NET applications.

ADO architecture

Cassandra .NET Connectivity Features

  • Cassandra 2.0 through 3.0 Compatibility – Leverages the faster performance and improved security of Cassandra V3.0.
  • CQL Pass-through Capability – Delivers native CQL3 or CQL2 data access to clustered Cassandra data, enabling users to create queries in CQL or SQL
  • Enables SQL-92 capabilities on Apache Cassandra NoSQL data.
  • Flexible NoSQL flattening - automatic schema generation, flexible querying etc.
  • Connect to live Apache Cassandra data, for real-time data access with the Apache Cassandra ODBC Driver
  • Full support for data aggregation and complex JOINs in SQL queries
  • Seamless integration with leading BI, reporting, and ETL tools and with custom applications via the Cassandra Connector.

Target Service, API

The driver connects to Apache Cassandra and DataStax Enterprise. Supports CQL (Cassandra Query Language) through SQL interface.

Schema, Data Model

Models Cassandra keyspaces and tables as relational schema. Handles Cassandra's wide-column structure and data types.

Key Objects

Keyspaces, Tables, Materialized Views, and User-Defined Types. Access to all Cassandra objects through SQL.

Operations

CQL operations through SQL interface. Full CRUD with support for lightweight transactions. Batch operations for performance.

Authentication

Username/Password authentication or Kerberos. SSL/TLS encryption supported. Connection to cluster contact points.

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See what you can do with Cassandra ADO.NET provider

SSAS Cube
SSAS Cube

Use Cassandra from SQL Server Analysis Service (SSAS) multi-dimensional cubes. Keep your analytical data modeling and access to any source including cloud and on-premises.

Custom .NET Application
Custom .NET Application

The Cassandra ADO.NET Provider allows developers to build applications that connect to Cassandra using familiar SQL and Entity Framework. Integrate Cassandra to your mission -critical applications or create easy side-by-side applications.

Reporting & BI
Low-Code Dev Platforms

You can connect from ADO.NET compliant low-code development tools:

Reporting & BI
Reporting Tools

You can connect Cassandra from .NET-based reporting and analytics tools:

Standard ADO.NET Access to Cassandra

The Cassandra ADO.NET Provider offers the most natural way to access Cassandra data from any .NET application. Simply use Cassandra Data Provider objects to connect and access data just as you would access any traditional database. You will be able to use the Cassandra Data Provider through Visual Studio Server Explorer, in code through familiar classes, and in data controls like DataGridView, GridView, DataSet, etc.

The CData ADO.NET Provider for Apache Cassandra hides the complexity of accessing data and provides additional powerful security features, smart caching, batching, socket management, and more.

Working with DataAdapters, DataSets, DataTables, etc.

The Cassandra Data Provider has the same ADO.NET architecture as the native .NET data providers for SQL Server and OLEDB, including: CassandraConnection, CassandraCommand, CassandraDataAdapter, CassandraDataReader, CassandraDataSource, CassandraParameter, etc. Because of this you can now access Cassandra data in an easy, familiar way.

For example:

using (CassandraConnection conn = new CassandraConnection("...")) {
	string select = "SELECT * FROM CQL Queries";
	CassandraCommand cmd = new CassandraCommand(select, conn);
	CassandraDataAdapter adapter = new CassandraDataAdapter(cmd);
	using (adapter) {
		DataTable table = new DataTable();
		adapter.Fill(table);		
		...
	}
}

More Than Read-Only: Full Update/CRUD Support

Cassandra Data Provider goes beyond read-only functionality to deliver full support for Create, Read, Update, and Delete operations (CRUD). Your end-users can interact with the data presented by the Cassandra Data Provider as easily as interacting with a database table. 

using (CassandraConnection connection = new CassandraConnection(connectionString)) {
	CassandraDataAdapter dataAdapter = new CassandraDataAdapter(
	"SELECT Id, Where FROM CQL Queries", connection);
  
	dataAdapter.UpdateCommand = new CassandraCommand(
		"UPDATE CQL Queries SET Where = @Where " +
		"WHERE Id = @ID", connection);

	dataAdapter.UpdateCommand.Parameters.AddWithValue("@Where", "Where");
	dataAdapter.UpdateCommand.Parameters.AddWithValue("@Id", "80000173-1387137645");

	DataTable CQL QueriesTable = new DataTable();
	dataAdapter.Fill(CQL QueriesTable);

	DataRow firstrow = CQL QueriesTable.Rows[0];
	firstrow["Where"] = "New Location";

	dataAdapter.Update(CQL QueriesTable);
}

ADO.NET Provider Performance

With traditional approaches to remote access, performance bottlenecks can spell disaster for applications. Regardless if an application is created for internal use, a commercial project, web, or mobile application, slow performance can rapidly lead to project failure. Accessing data from any remote source has the potential to create these problems. Common issues include:

  1. Network Connections - Slow network connections and latency issues are common in mobile applications.
  2. Service Delays - Delays due to service interruptions, resulting in server hardware or software updates.
  3. Large Data - Intentional or unintentional requests for large amounts of data.
  4. Disconnects - Complete loss of network connectivity.

The CData ADO.NET Provider for Apache Cassandra solves many of these issues with support for replication queries that can be used to sync data to local databases, greatly improving the performance and dramatically reduce application bottlenecks.

More information about ADO.NET Provider performance capabilities are available in the included documentation.

Visual Studio Integration & Server Explorer

Working with the new Cassandra ADO.NET Provider is easy. As a fully-managed .NET Data Provider, the Cassandra Data Provider integrates seamlessly with the Visual Studio development environment as well as any .NET application.

As an ADO.NET Data Provider, Cassandra ADO.NET Provider can be used to access and explore Apache Cassandra data directly from the Visual Studio Server Explorer.

It's easy. As a standard ADO.NET adapter, developers can connect the Server Explorer to Cassandra ADO.NET Provider just like connecting to any standard database.

  • Add a new Data Connection from the Server Explorer and select the Apache Cassandra Data Source
  • Configure the basic connection properties to access your Apache Cassandra account data.

Explore all of the data available! Cassandra ADO.NET Provider makes it easy to access live Apache Cassandra data from Visual Studio.

  • After configuring the connection, explore the feeds, views, and services provided by the Apache Cassandra Data Source.
  • These constructs return live Apache Cassandra data that developers can work with directly from within Visual Studio!

Developer Integration: Databind to Cassandra

Connecting Web, Desktop, and Mobile .NET applications with Apache Cassandra is just like working with SQL Server. It is even possible to integrate Cassandra ADO.NET Provider into applications without writing code.

Developers are free to access the Cassandra ADO.NET Provider in whatever way they like best. Either visually through the Visual Studio Winforms or Webforms designers, or directly through code.

  • Developers can connect the Apache Cassandra Data Source directly to form components by configuring the object's smart tags.
  • Add a new Data Connection from the Server Explorer and select the Apache Cassandra Data Source. Then, select the feed, view, or services you would like to connect the object to.

Done! It's just like connecting to SQL Server.

  • Once the object is bound to the data source, applications can easily interact with Apache Cassandra data with full read/write (CRUD) support.

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