Chain-Sys Programmer Interview Questions, Process, and Tips

Q1. What is the use of triggers?
Ans. 
Triggers are database objects that automatically perform an action when a specified event occurs.
• Triggers are used to maintain data integrity by enforcing business rules or referential integrity.

• They can be used to audit changes to data, such as tracking who made a change and when.

• Triggers can also be used to replicate data changes to other tables or systems.

• Examples include triggering a notification when a new record ...read more
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Q2. What is the package in PLSQL?
Ans. 
A package in PL/SQL is a collection of related procedures, functions, variables, and other PL/SQL constructs.
• Packages help organize and encapsulate code for easier maintenance and reuse.

• They consist of a specification (header) and a body.

• Packages can contain procedures, functions, variables, constants, cursors, and exceptions.

• Example: CREATE PACKAGE my_package AS PROCEDURE my_procedure; END my_package;

• Example: CREATE P...read more
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Given a problem, we need to write java program for it.

Q1. 1) How to restrict the value for particular button pressed from keyboard?
Ans. 
You can restrict the value for a particular button pressed from the keyboard by using event listeners and conditionals in your code.
• Use event listeners to detect when a key is pressed on the keyboard

• Check the value of the key pressed and only allow the desired button to trigger an action

• You can use if statements or switch cases to restrict the value for a particular button pressed
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Q2. Do you know about machine learning
Ans. 
Yes, machine learning is a branch of artificial intelligence that focuses on developing algorithms and models that allow computers to learn from and make predictions or decisions based on data.
• Machine learning involves training algorithms to recognize patterns in data and make predictions or decisions without being explicitly programmed.

• Common machine learning techniques include supervised learning, unsupervised learni...read more
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Q3. Have basic knowledge.
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Q1. Say your good & bad attitude?
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Q2. Why was you not selected in previous company?
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Q3. How many years you would work in this company?
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