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What is database connection session?
A database connection is a session of work, opened by the program to communicate with a specific database server, in order to execute SQL statements as a specific user. When using the CONNECT TO , SET CONNECTION and DISCONNECT instructions, the program is in multi-session mode.
What is a database connection object?
A Connection object represents a unique session with a data source. In a client/server database system, it may be equivalent to an actual network connection to the server. Establish, and later break, the physical connection to the data source with the Open and Close methods.
How does application connect to database?
Applications get a database connection from a connection pool by looking up a data source using the Java Naming and Directory Interface (JNDI) and then requesting a connection. The connection pool associated with the data source provides the connection for the application.
What is a session connection?
Literally : Connection is Physical Communication Channel and Session is a state of information exchange. A Connection may have multiple sessions . The connection is the physical communication channel between SQL Server and the application: the TCP socket, the named pipe, the shared memory region.
What are sessions in SQL?
A SQL session is an occurrence of a user interacting with a relational database through the use of SQL commands. When a user initially connects to the database, a session is established. A session may be invoked by either direct connection to the database or through a front-end application.
What is the use of connection object?
The Connection Object A connection sets a link between a data source and ADO.NET. A Connection object sits between a data source and a DataAdapter (via Command). You need to define a data provider and a data source when you create a connection.
What do you need to know about social media databases?
The top-performing social networking sites including Facebook and Instagram require a perfect database design. Their user data, authentication data, user preferences, links between profiles, individual posts and everything else needs accurate mapping and conservation.
How is performance measured in social media databases?
When it comes to social media databases, performance or response times is measured in percentiles and a definition of the workload. A good option for social media databases is buffering writes and caching for reads, to reduce read traffic to database.
Almost 3 billion people use social networking sites regularly. 1.2 billion People use Facebook monthly, and Twitter is catching up fast too. There is an incredible amount of data you can find on these online sites. Social media and social networking depend on each other, although the terms are not interchangeable.
Social media sites provide a variety of features that serve different purposes for the individual user.19They may include blogs, social networks, video- and photo-sharing sites, wikis, or a myriad of other media, which can be grouped by purpose, serving functions such as:4,7,8 Social networking (Facebook, MySpace, Google Plus, Twitter)