Indian Society of New Era Engineers Interview Questions and Answers

Job security in Avendata Gmbh is good.

• Avendata Gmbh has a stable and growing business.

• The company has a diverse range of clients and projects.

• Avendata Gmbh invests in employee training and development.

• The company has a positive work culture and values its employees.

• There have been no recent reports of layoffs or downsizing.

To delete rows from 3 tables with a single query, use the DELETE statement with JOINs.

• Use the DELETE statement with JOINs to specify the tables and conditions for deletion.

• Ensure that the JOIN conditions are properly defined to delete the desired rows.

• Use aliases for table names to simplify the query and improve readability.

• Test the query with a SELECT statement before executing the DELETE statement to verify the rows to be deleted.

The leave policy is comprehensive and employee-friendly.

• Employees are entitled to a certain number of paid leave days per year.

• Additional leave can be taken for special circumstances like maternity/paternity leave or bereavement leave.

• Leave can be requested and approved through an online system or by submitting a form to the HR department.

• Unused leave days can sometimes be carried forward to the next year or compensated monetarily.

• The policy may vary based on the employee's t...read more

A stored procedure is a set of SQL statements that are stored in the database and can be called by name to perform a specific task.

• Stored procedures help improve performance by reducing network traffic and improving security.

• They can accept input parameters and return output parameters.

• Stored procedures can be reused across multiple applications.

• Examples: CREATE PROCEDURE, CALL PROCEDURE.

No, the delete command cannot be rolled back in MySQL.

• Delete command permanently removes data from a table.

• Rollback command can only be used with transactions involving insert, update, or alter commands.

• Once a delete command is executed, the data is gone and cannot be recovered.

• To undo a delete operation, you would need to restore the data from a backup.

Triggers are database objects that automatically perform an action when a specified event occurs.

• Triggers are used to enforce business rules, maintain data integrity, and automate repetitive tasks.

• They can be set to execute before or after an INSERT, UPDATE, or DELETE operation on a table.

• Examples of triggers include auditing changes to a table, updating a related table when a record is modified, or enforcing referential integrity.

@Input and @Output are decorators in Angular used for data binding between parent and child components.

• @Input allows a parent component to pass data to a child component.

• Example: @Input() childData: string; in child component to receive data.

• @Output allows a child component to emit events to the parent component.

• Example: @Output() eventEmitter = new EventEmitter(); in child component to emit an event.

I am proficient in various technologies including Java, Python, HTML/CSS, JavaScript, and SQL.

• Proficient in Java and Python programming languages

• Familiar with HTML/CSS and JavaScript for web development

• Experience with SQL for database management

• Knowledge of Git for version control

• Familiarity with Agile methodology for software development

• Experience with AWS for cloud computing

• Experience with Docker for containerization