Odbc or open database connectivity is an open wellknown utility programming interface used for getting access to hetrogenous datasources. Im...
Odbc or open database connectivity is an open wellknown utility programming interface used for getting access to hetrogenous datasources.
Imagine you have written several personal home page packages which makes a connection to an oracle database. For some purpose now you've got determined to use mysql as opposed to oracle. Supposing you've got used a proprietary connection to oracle, then it'd take quite a few coding attempt to alter every of the Hypertext Preprocessor applications to make it connect to mysql as it already has join strings to oracle.
Now odbc presents seamless open database connectivity the use of easy apis to an expansion of statistics assets along with mysql, ms-get right of entry to, mssql, oracle etc.,one has to create a odbc connection for the precise datasource. This may be done using the odbc conversation container which is available from the manipulate panel. One requires a odbc driver to be set up thru dynamic link libraries. There are three types of dsns (facts supply names), namely person dsn, gadget dsn and document dsn.
After making sure that the driver required to hook up with a records supply is gift one wishes to feature the facts source via manually including a statistics supply from the odbc conversation box within the manipulate panel. After adding a database one has to configure it. The method to configure a database varies from one database to another. For instance it's miles special for oracle than ms-get admission to as oracle has a layer of tns (transparent community substrate). In the case of oracle the tns carrier name is mandatory to create a odbc connection between consumer and server. Inside the case of microsoft access one has to just specify the network location of the get entry to database and the name of the database. The odbc supervisor accessible from the manage panel will contend with these types of problems whilst attempting to create a dsn call.
Here is an example of a personal home page application connecting to a mysql database thru a dsn named as "testdsn".
$conn=odbc_connect('testdsn','','');
$sq.="pick * from worker";
$cursor =odbc_exec($conn,$sq.)
One might also join a php software to a database using a dsnless connection. The drawback of the use of a dsn based totally join string in a server - customer system is that one requires to configure the dsn or a couple of dsns being used in the server facet scripts( such as php) on patron computer systems that or a couple of client computers. This is because when a client laptop encounters an odbc string in a Hypertext Preprocessor application the dsn string needs to be configured within the nearby patron. This could no longer be viable to do whilst there are quite a few customers using such programs. In such cases one makes use of dsn less connections where the server's ip address /database name, person identification and password are at once referred to in the join string.
Imagine you have written several personal home page packages which makes a connection to an oracle database. For some purpose now you've got determined to use mysql as opposed to oracle. Supposing you've got used a proprietary connection to oracle, then it'd take quite a few coding attempt to alter every of the Hypertext Preprocessor applications to make it connect to mysql as it already has join strings to oracle.
Now odbc presents seamless open database connectivity the use of easy apis to an expansion of statistics assets along with mysql, ms-get right of entry to, mssql, oracle etc.,one has to create a odbc connection for the precise datasource. This may be done using the odbc conversation container which is available from the manipulate panel. One requires a odbc driver to be set up thru dynamic link libraries. There are three types of dsns (facts supply names), namely person dsn, gadget dsn and document dsn.
After making sure that the driver required to hook up with a records supply is gift one wishes to feature the facts source via manually including a statistics supply from the odbc conversation box within the manipulate panel. After adding a database one has to configure it. The method to configure a database varies from one database to another. For instance it's miles special for oracle than ms-get admission to as oracle has a layer of tns (transparent community substrate). In the case of oracle the tns carrier name is mandatory to create a odbc connection between consumer and server. Inside the case of microsoft access one has to just specify the network location of the get entry to database and the name of the database. The odbc supervisor accessible from the manage panel will contend with these types of problems whilst attempting to create a dsn call.
Here is an example of a personal home page application connecting to a mysql database thru a dsn named as "testdsn".
$conn=odbc_connect('testdsn','','');
$sq.="pick * from worker";
$cursor =odbc_exec($conn,$sq.)
One might also join a php software to a database using a dsnless connection. The drawback of the use of a dsn based totally join string in a server - customer system is that one requires to configure the dsn or a couple of dsns being used in the server facet scripts( such as php) on patron computer systems that or a couple of client computers. This is because when a client laptop encounters an odbc string in a Hypertext Preprocessor application the dsn string needs to be configured within the nearby patron. This could no longer be viable to do whilst there are quite a few customers using such programs. In such cases one makes use of dsn less connections where the server's ip address /database name, person identification and password are at once referred to in the join string.
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