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Plex Systems SQL Developer Interview Questions and Answers
Plex Systems SQL Developer Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed in May 2021. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. What are indexes
- Ans.
Indexes are database structures that improve the speed of data retrieval operations.
Indexes are created on one or more columns of a table.
They work like a book's index, allowing the database to quickly find the data.
Indexes can be clustered or non-clustered.
Clustered indexes determine the physical order of data in a table.
Non-clustered indexes are separate structures that point to the data.
Indexes can be unique or non-...
- Q2. What is OLTP, OLAP
- Ans.
OLTP stands for Online Transaction Processing and OLAP stands for Online Analytical Processing.
OLTP is used for transactional processing of data in real-time.
OLAP is used for analytical processing of data for decision-making purposes.
OLTP databases are designed for high-speed data processing and retrieval.
OLAP databases are designed for complex queries and data analysis.
Examples of OLTP systems include banking systems,...
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
(2 Questions)
- Q1. What is normalization
- Ans.
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization involves breaking down data into smaller, more manageable tables
It helps in reducing data redundancy by eliminating duplicate data
Normalization ensures data integrity by enforcing relationships between tables
There are different normal forms such as 1NF, 2NF, 3NF, and BCNF
- Q2. What is indexing
- Ans.
Indexing is a technique used to improve the performance of database queries by creating a data structure that allows for faster retrieval of data.
Indexes are created on columns in a database table to speed up the retrieval of rows that match a certain condition.
They work similar to an index in a book, allowing the database to quickly locate the rows that satisfy a query.
Examples of indexes include primary keys, unique
SQL Developer Interview Questions & Answers
Oracle
Sabina Ixchel García Mendoza
posted on 12 Jun 2024
I applied via Referral and was interviewed in May 2024. There was 1 interview round.
Sql coding challenge
Interview Preparation Tips
SQL Developer Interview Questions & Answers
Automatic Data Processing (ADP)
Anonymous
posted on 30 Jul 2023
I applied via Referral and was interviewed before Jul 2022. There were 3 interview rounds.
Quant and verbal related questions
(2 Questions)
- Q1. All questions related to SQL and some python questions
- Q2. Explain about VIEW in SQL
- Ans.
A VIEW in SQL is a virtual table created by a query. It does not store data itself but displays data from one or more tables.
Views are used to simplify complex queries by storing them as a virtual table.
They can be used to restrict access to specific columns or rows of a table.
Views can also be used to join multiple tables and present the data in a more readable format.
Changes made to the underlying tables are reflecte...
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Oct 2021. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. General questions and some technical round with problems
Interview Preparation Tips
Software Developer Intern Interview Questions & Answers
OpenText Technologies
Anonymous
posted on 30 Nov 2024
Selected
I applied via campus placement at Kalinga Institute of Industrial Technology, Khurda and was interviewed in May 2024. There were 2 interview rounds.
Coding round was there. Two coding questions were asked to solve in 1 hour. The difficulty was easy to medium.Leetcode questions of arrays and strings.
(2 Questions)
- Q1. It was an online tech interview. There were two panelists. One asked me about my projects and gave me one coding question to solve which was based on matrices. And i was supposed to explain the approach an...
- Q2. After solving the question. In the same interview zoom meet HR asked me something about me and my family and thats it.
Interview Preparation Tips
Be confident
Communicate well
And just relax before 2 hours of the interview....You are going to do awesome...
I applied via Campus Placement and was interviewed in Apr 2024. There were 2 interview rounds.
Maintain a good communication to the hr
(5 Questions)
- Q1. Questions from your resume and projects
- Q2. Difference between elements and tags
- Ans.
Elements are individual components of a web page, while tags are used to define the structure of elements in HTML.
Elements are the actual components on a web page, such as headings, paragraphs, images, etc.
Tags are used to define the structure of elements in HTML, such as
for a heading or
for a paragraph.
Elements can have attributes that provide additional information or functionality, while tags do not.
- Q3. Uses of functions in js
- Ans.
Functions in JavaScript are used to define reusable blocks of code that can be called multiple times.
Functions can be used to perform specific tasks or calculations.
Functions can be passed as arguments to other functions.
Functions can be assigned to variables or properties of objects.
Functions can be used to create closures for encapsulating data.
Functions can be used to create custom methods for objects.
- Q4. Uses of get elementbyId in js
- Ans.
getElementById is used in JavaScript to access and manipulate an element in the DOM by its unique ID.
Used to retrieve a specific element from the DOM by its ID
Allows for manipulation of the element's properties, styles, and content
Commonly used in event handling and dynamic content updates
- Q5. Typesof cssess ?
- Ans.
There are three types of CSS: inline, internal, and external.
Inline CSS is applied directly to an HTML element using the style attribute.
Internal CSS is defined within the head section of an HTML document using the style tag.
External CSS is stored in a separate file and linked to the HTML document using the link tag.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
(4 Questions)
- Q1. Reverse the items in the array with highest values skip the lowest
- Ans.
Reverse items in array with highest values, skipping the lowest
Sort the array in descending order
Skip the lowest value(s)
Reverse the remaining items
- Q2. Kotlin coroutines
- Q3. Java interface and abstract class difference
- Ans.
Java interface defines a contract for classes to implement, while abstract class provides common functionality for subclasses.
Interface can only have abstract methods, while abstract class can have both abstract and non-abstract methods.
A class can implement multiple interfaces but can only extend one abstract class.
Interfaces are used to achieve multiple inheritance in Java, while abstract classes are used to provide ...
- Q4. MVVM Pattern in android
- Ans.
MVVM is a design pattern used in Android development to separate the UI logic from the business logic.
MVVM stands for Model-View-ViewModel
Model represents the data and business logic
View is the UI component that displays the data
ViewModel acts as a mediator between the Model and View, handling the UI logic and data manipulation
MVVM helps in maintaining a clean and organized codebase
Interview Preparation Tips
Skills evaluated in this interview
(1 Question)
- Q1. I don't Remember the question1
(2 Questions)
- Q1. I don't remember the question2
- Q2. I don't remember the question
OnCampus Test including DSA Questions
(2 Questions)
- Q1. Introduce yourself
- Q2. DSA Question based on Dynamic Programming
Interview Preparation Tips
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