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In selenium contents Black Barry Larkin Jersey , when there is a need of getting the Data from the database we may need to utilize APIs which communicates with database like JDBC. Java Database Connectivity (JDBC) is a Java API which is utilized to associate and collaborate with Database.
For what reason do we utilize JDBC rather ODBC?
ODBC is produced and written in C, which is stage Independent. Whereas JDBC API is a detail gives set of interfaces which are composed and created in Java programming dialect.
How to connect to database utilizing JDBC?
The beneath are the Steps to Connect to database, before continuing Black Joe Morgan Jersey , you need MySQL Connector. You can download from here Download MySQL Connector Jar and include it the construct way as we include selenium webdriver jar.
鈥?Load and Registering the Driver
鈥?Setting up Connection.
鈥?Making Statement Object
鈥?Execute the Statement
鈥?Shutting the association.
1. Load and Register the Driver:
For enrolling the Driver we Load the Driver class utilizing forName() strategy. forName() is the static manufacturing plant strategy which is available in predefined class called "Class". This strategy stacks the class which is specified as parameter.
ame(" er"); ame stack the Driver class
Inside this Driver class will enlist the driver by utilizing static strategy called registerDriver().
2. Building up Connection:
For building up association with database we call static strategy called getConnection(...) introduce in DriverManager Class. This technique contains three contentions of string sort. i.e., url, username and secret key
onnection("jdbc:mysql:localhost:3306Employee" Black Johnny Bench Jersey ,"root","root");
URL contains "jdbc(main protocol):mysql(sub convention for mySql):localhost:3306(sub name for mysql (host:prot))Employee(database)" and this strategy return sort is Connection Object ie., Association
con= onnection("jdbc:mysql:localhost:3306Employee" Barry Larkin Jersey ,"root","root");
3. Making Statement Object:
For making articulation question we have to call a strategy called createStatement() which is available in Connection Interface.
teStatement();
What's more, this strategy returns Statement question and it is no contention technique.
statement st= teStatement();
uting Queries:
For executing inquiries there are distinctive techniques exhibit in Statement Interface for recovering records and for refreshing records.
Recovering records:
for executing select queries(for bringing records) we call a strategy called executeQuery(String qry) by taking string as parameter.
uteQuery("Select * from Employee");
This strategy returns ResultSet protest.
Resultset rs= uteQuery("Select * from Employee");once executeQuery() executes the inquiry and stores the records in to ResultSet question.
Presently we have to get the records from ResultSet question. To get to the resultset protest it utilizes a strategy called next() which displays in ResultSet Interface.
Naturally Resultset reference 'rs' focuses to before first column. it moves rs to next line and returns genuine. When it returns genuine we recover the information in first column. next() returns false when rs focuses to after the last column. this next() will rehashes the execution utilizing while circle till it returns false.
Refreshing records:
To refresh records in a table we utilize a technique called executeUpdate(String str) which returns whole number an incentive as what number of records have been refreshed.
5. Shutting the Connection:
When execution of all announcements were finished we have to close every one of the associations by utilizing strategy called close() show in Connection interface
There are fundamentally two things that we should need to test to confirm database with Selenium.
To begin with Joe Morgan Jersey , in the wake of making any activity in the web application (Front-end), we might need to check the database if every one of the subtle elements we submitted are put away effectively. Presently for instance, while making a record Johnny Bench Jersey , we will enter a few information email Id, username and so forth. To ensure a record is made, we can check record made in database with every one of the subtle elements client gave.
Other case can resemble Cincinnati Reds Hats , subsequent to playing out any activity, we might need to check the information showed in the UI is right by looking at the Database.
About Author:
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