Advanced Java Programming · Unit 5
Database Connectivity with JDBC
Exam-focused notes for Database Connectivity with JDBC (Advanced Java Programming, BIT401): what the TU syllabus asks and how it has actually been tested, with 6 solved past questions from this unit.
What this unit covers
- JDBC architecture and driver types
- Steps of JDBC connection
- Statement and PreparedStatement
- Differences between Statement and PreparedStatement
- Handling multiple result sets
- Database connection from JSP
- Type 0 JDBC driver
Database connection from JSP
How do you connect database using JSP? [5]
- Use Class.forName() to dynamically load the database driver - For MySQL, use com.mysql.jdbc.Driver - For other databases, use appropriate driver class names - Use DriverManager.getConnection() with three parameters: - URL: Connection string with host, por...
Full solved answer →Handling multiple result sets
How do you handle multiple results in JDBC? Explain. [5]
Handling multiple results in JDBC involves managing situations where a single SQL statement execution returns more than one result set. This typically occurs with stored procedures or batch operations. Here's how to handle them: The execute() method returns...
Full solved answer →Type 0 JDBC driver
What is Type 0 JDBC driver? Discuss about UDP. [5]
Type 0 JDBC Driver (also called the JDBC-ODBC Bridge Driver) is a bridge-based driver that acts as a middleware between Java applications and databases through ODBC (Open Database Connectivity). - Architecture: Uses ODBC drivers installed on the client mach...
Full solved answer →JDBC architecture and driver types
Explain the architecture of JDBC and list the JDBC driver types. [5]
JDBC (Java Database Connectivity) follows a layered architecture consisting of two main layers: - This is the top layer where Java applications interact with databases - Applications use JDBC API to communicate with databases - Developers write code using J...
Full solved answer →Differences between Statement and PreparedStatement
How prepared statements differs from statements? Explain use of prepared statements with example. [5]
Aspect Statement Prepared Statement -------------------------------------- Compilation SQL query compiled every time it executes SQL query pre-compiled once, reused multiple times Performance Slower for repeated queries Faster for repeated queries SQL Injec...
Full solved answer →Steps of JDBC connection
Explain steps of JDBC with suitable example. [5]
JDBC is a Java API that allows Java programs to interact with databases. The main steps are: Register the database driver class with the DriverManager. Create a connection to the database using the connection URL, username, and password. Create a Statement ...
Full solved answer →Make Unit 5 stick
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