DBMS

Stored procedures are pre-compiled modules containing SQL statements and logic stored on the database server. They can be invoked multiple times with different inputs, improving … Read more

Oracle provides a robust exception handling mechanism to manage errors and unexpected situations during program execution. This mechanism consists of the following key elements: 1. … Read more

Cursors in SQL offer a powerful way to process data row-by-row, providing greater control and flexibility compared to traditional set-based operations. However, managing complex cursor … Read more

1. Single Table Extraction 2. Multiple Tables (Equi-Join) 3. Multiple Tables (Non-Equi-Join) 4. Self-Join 5. Outer Joins 5.1 Left Outer Join 5.2 Right Outer Join … Read more

In relational database management systems (RDBMS), a comprehensive approach to security is crucial. This involves various measures and tools to ensure data confidentiality, integrity, and … Read more

Distributed database A distributed database is a database system that spans multiple physical locations, typically across different computers or networks. The data is physically stored … Read more

The terms “dedicated server” and “multi-threaded server” are often used in the context of web hosting. While both terms refer to servers that can host … Read more

Triggers A trigger is a stored procedure that automatically executes in response to a specific event in the database, such as an INSERT, UPDATE, or … Read more

In a relational database management system (RDBMS), data storage and management is organized through various layers of logical units. Understanding these units is crucial for … Read more

Q. Consider the following employee database- Employee (Emp_name, Street, City) Works (Emp_name, Company_name, Salary) Company (Company_name, City) Manages (Emp_name, manager_name) Write expressions in SQL for … Read more