What is the DataSource?

What is the DataSource?

A data source is simply the source of the data. It can be a file, a particular database on a DBMS, or even a live data feed. The data might be located on the same computer as the program, or on another computer somewhere on a network.

What is difference between DataSource and DriverManager?

DataSource and the DriverManager are the two basic ways to connect to a database. The DriverManager is older facility, DataSource is newer. It is recommended to use the new DataSource facility to connect to databases and other resources. DataSource facility has several advantages over DriverManager facility.

What is DataSource in database connection?

A DataSource object represents a particular DBMS or some other data source, such as a file. If a company uses more than one data source, it will deploy a separate DataSource object for each of them. The DataSource interface is implemented by a driver vendor.

What are examples of data source?

What are Data Source Types?

• Databases.
• Flat files.
• Web services.
• Other sources such as RSS feeds.

Where do you source data?

20 Awesome Sources of Free Data

• Google Dataset Search. This enables you to search available datasets that have been marked up properly according to the schema.org standard.
• Google Trends.
• U.S. Census Bureau.
• The Official Portal for European Data.
• Data.gov U.S.
• Data.gov U.K.
• Health Data.
• The World Factbook.

What is the difference between JDBC and DataSource?

JDBC providers:it is the actual implementation of driver class to access the different database types. Data source: It is associated with JDBC provider to get connected with the database.It is normally use for connection purpose.

What is DataSource object in Java?

A DataSource object is the representation of a data source in the Java programming language. In basic terms, a data source is a facility for storing data. It can be as sophisticated as a complex database for a large corporation or as simple as a file with rows and columns.

How do I get DataSource?

Procedure

1. From your system administrator, obtain the logical name of the data source to which you need to connect.
2. Create a Context object to use in the next step.
3. In your application program, use JNDI to get the DataSource object that is associated with the logical data source name.
4. Use the DataSource.

Where can I find data source?

So here’s my list of 15 awesome Open Data sources:

• World Bank Open Data.
• WHO (World Health Organization) — Open data repository.
• Google Public Data Explorer.
• Registry of Open Data on AWS (RODA)
• European Union Open Data Portal.
• FiveThirtyEight.
• U.S. Census Bureau.
• Data.gov.

What is JNDI context?

The JNDI API defines a context that specifies where to look for an object. The initial context is typically used as a starting point. In the simplest case, an initial context must be created using the specific implementation and extra parameters required by the implementation.

What is JNDI and JDBC?

JDBC is Java Database Connectivity API, while JNDI is Java Naming and Directory Interface API. The main thing here is that in a JNDI directory you’re actually storing a JDBC DataSource, so, you’re simply using JDBC to obtain a Connection via JNDI lookup.

What is DataSource in Java?

What is the use of DataSource in Java?

A DataSource object has properties that can be modified when necessary. For example, if the data source is moved to a different server, the property for the server can be changed. The benefit is that because the data source’s properties can be changed, any code accessing that data source does not need to be changed.

How do you create a DataSource in Java?

To create and deploy a DataSource object, you need to perform these tasks:

1. Create an instance of the appropriate DataSource implementation.
2. Set the properties of the DataSource object.
3. Register the object with the Java Naming and Directory Interface (JNDI) naming service.

What is the DataSource in Java?

How do you create a DataSource object?

What is a DataSource object?

A DataSource object represents a particular DBMS or some other data source, such as a file. If a company uses more than one data source, it will deploy a separate DataSource object for each of them. The DataSource interface is implemented by a driver vendor.

What happens after a DataSource implementation?

After a basic DataSource implementation is deployed by a system administrator, it is ready for a programmer to use. This means that a programmer can give the logical data source name that was bound to an instance of a DataSource class, and the JNDI naming service will return an instance of that DataSource class.

What happens when the DataSource and xadatasource objects are deployed?

When the DataSource and XADataSource objects are deployed, the connections produced will be able to participate in distributed transactions.

What properties must be set for the DataSource object?

Generally only two properties must be set for the DataSource object: description and dataSourceName. The value given to the dataSourceName property is the logical name identifying the ConnectionPoolDataSource object previously deployed, which is the object containing the properties needed to make the connection.