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Are database connections TCP?
HTTP is an application level protocol and usually uses TCP/IP as underlying transport protocol, so even databases like CouchDB that use HTTP also use TCP/IP .
What is database connection?
A Database connection is a facility in computer science that allows client software to talk to database server software, whether on the same machine or not. A connection is required to send commands and receive answers, usually in the form of a result set. Connections are a key concept in data-centric programming.
What protocol do database connections use?
ODBC—Open DataBase Connectivity is the most common general protocol for communication among various databases. JDBC—the Java equivalent of ODBC. OLE-DB—Microsoft’s newest technology for database access.
Are database connections HTTP?
Officially, the portion of the database connection URL called the protocol is jdbc:, just as http:// is a protocol in Web URLs. However, the second portion of the database connection URL (everything between jdbc: and databaseName), which is called the subprotocol, is informally considered part of the protocol.
Is TCP over JDBC?
JDBC Type 3 and Type 4 drivers use a network protocol to communicate to their back-ends. This usually implies a TCP/IP connection; this will either be a straight TCP/IP socket, but if the driver supports it, it can be a Secure Socket Layer (SSL) connection.
Does JDBC use SSL?
Support for SSL/TLS is not mandated in the JDBC specification. So you cannot expect it in every driver. SSL configuration on the database server could be inferred from the JDBC URL, but this need not be deterministic.
Is JDBC a protocol?
A net-protocol fully Java technology-enabled driver translates JDBC API calls into a DBMS-independent net protocol which is then translated to a DBMS protocol by a server. This net server middleware is able to connect all of its Java technology-based clients to many different databases.
Is there any difference between socket connection and TCP connection?
In my opinion, they are different, and socket connection is based on tcp connection. A socket contains an IP address and port and it could only connect to another socket, but an IP address and port in the same machine could be connected with many other IP addresses and ports with TCP connection. Is this right?
Which is the default value for the connection string?
The connection string that includes the source database name, and other parameters needed to establish the initial connection. The default value is an empty string. Note: You can force the use of TCP instead of shared memory, either by prefixing tcp: to the server name in the connection string, or by using localhost. Encrypt ‘false’
How to connect to Oracle database via TCP?
The ports are correctly assigned, the database can successfully get accessed with the normal TCP protocol and port 1521. jdbc:oracle:thin:@ (DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (HOST=IP) (PORT=1521)) (CONNECT_DATA= (SERVICE_NAME=testdb))) Are we missing steps? There don’t seem to be any firewall issues.
When to use sqlconnection.connectionstring ( system.data )?
Valid values are 1 to 60 seconds (default=10), applied after the first reconnection attempt. When a broken connection is detected, the client immediately attempts to reconnect; this is the first reconnection attempt and only occurs if ConnectRetryCount is greater than 0.