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DDL stands for Data Definition Language. It is used to define the structure of database objects.
DDL commands are used to create, modify, and delete database objects such as tables, indexes, and views.
Examples of DDL commands include CREATE, ALTER, and DROP.
DDL commands are not used to manipulate data within the database, that is done using DML (Data Manipulation Language) commands.
Types of constraints include primary key, foreign key, unique, check, and default constraints.
Primary key constraint ensures each row in a table is unique.
Foreign key constraint enforces referential integrity between two tables.
Unique constraint ensures that all values in a column are distinct.
Check constraint restricts the values that can be inserted into a column.
Default constraint provides a default value for a colu
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I applied via Company Website and was interviewed in Dec 2019. There were 4 interview rounds.
I appeared for an interview in Feb 2025, where I was asked the following questions.
JPA (Java Persistence API) is a specification for managing relational data in Java applications using object-relational mapping.
JPA provides a way to map Java objects to database tables.
It simplifies database interactions through an object-oriented approach.
Common implementations include Hibernate, EclipseLink, and OpenJPA.
Example: Using JPA annotations like @Entity to define a persistent class.
JPA supports querying wi...
This program identifies and returns duplicate elements from a given list.
Use a set to track seen elements and a list for duplicates.
Iterate through the list and check if an element is in the set.
If it is, add it to the duplicates list; otherwise, add it to the set.
Example: For the list [1, 2, 3, 2, 4, 3], the output should be [2, 3].
I applied via Approached by Company and was interviewed in Sep 2023. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Mar 2021. There were 3 interview rounds.
Servlet and JSP life cycle involves initialization, request processing and destruction.
Servlet life cycle includes init(), service() and destroy() methods.
JSP life cycle includes translation, compilation, initialization, and request processing.
Servlet container manages the life cycle of servlets and JSPs.
Servlet and JSP objects are created and initialized during initialization phase.
During request processing phase, ser...
JDBC is a Java API for connecting to and interacting with databases.
JDBC stands for Java Database Connectivity.
It provides a standard interface for connecting to databases.
JDBC drivers are used to connect to specific databases.
JDBC can be used to execute SQL queries and retrieve results.
Example: Class.forName("com.mysql.jdbc.Driver"); Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","userna
I applied via Referral and was interviewed in Jan 2023. There were 4 interview rounds.
General asked aptitude
Focus most on profit lost, percentage
I appeared for an interview in Aug 2022.
try catch and finally are keywords used in exception handling in programming languages.
try block contains the code that may throw an exception
catch block catches the exception thrown by the try block and handles it
finally block contains the code that is executed regardless of whether an exception is thrown or not
try-catch-finally is used to handle errors and prevent program crashes
Example: try { //code that may throw a...
Why are you leaving your company
I appeared for an interview before Sep 2022.
Logical questions were there with difficult from easy to medium type.
based on 2 interviews
Interview experience
Manager
7
salaries
| ₹5.7 L/yr - ₹7.4 L/yr |
Senior Executive
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salaries
| ₹2.3 L/yr - ₹4 L/yr |
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Assistant Manager
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| ₹3 L/yr - ₹7.2 L/yr |
Executive
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salaries
| ₹1.8 L/yr - ₹2.9 L/yr |
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