Coditas Technologies Software Developer Intern Interview Questions and Answers

To add a link to your Linkedin account in a website by clicking on the logo, use the <a> tag with the href attribute set to your Linkedin profile URL.

• Use the <a> tag with the href attribute set to your Linkedin profile URL

• Insert the Linkedin logo image inside the <a> tag as the clickable element

• Example: <a href='https://www.linkedin.com/in/yourprofile'><img src='linkedin_logo.png' alt='Linkedin'></a>

The choice of database depends on factors like data structure, scalability, performance, and query requirements.

• Consider the data structure and relationships between entities.

• Evaluate the scalability requirements of the task.

• Analyze the performance needs, including read and write operations.

• Assess the query requirements, such as complex joins or aggregations.

• Examples: relational databases for structured data, NoSQL for unstructured or rapidly changing data.

The task is to add the consecutive numbers present in a given string.

• Iterate through the string character by character

• Check if the current character is a digit

• If it is a digit, continue iterating until a non-digit character is encountered

• Convert the consecutive digits into a number and add it to the sum

• Repeat the process until all characters are processed

• Return the sum

JDBC is a Java API for connecting and executing queries on a database.

• JDBC stands for Java Database Connectivity.

• It provides a set of classes and interfaces to interact with databases.

• JDBC allows developers to write database-independent code.

• It supports various database operations like connecting, querying, updating, and deleting data.

• JDBC drivers are used to establish a connection between Java application and database.

• Example: Class.forName("com.mysql.jdbc.Driver");

C++ supports multiple inheritance while Java supports single inheritance.

• C++ allows a class to inherit from multiple classes, while Java only allows a class to inherit from a single class.

• In C++, a class can have multiple parent classes, resulting in a complex class hierarchy.

• Java enforces single inheritance to avoid the diamond problem and maintain simplicity.

• For example, in C++, a class can inherit from both a 'Vehicle' class and a 'Animal' class, while in Java, it can only...read more

SQL databases are structured and use a fixed schema, while NoSQL databases are unstructured and have a flexible schema.

• SQL databases use structured query language for defining and manipulating the data.

• NoSQL databases use various data models like key-value, document, columnar, or graph.

• SQL databases are suitable for complex queries and transactions.

• NoSQL databases are horizontally scalable and provide high performance for large datasets.

• SQL databases ensure data integrity wit...read more

Relational databases store data in tables with predefined relationships. Non-relational databases store data in flexible, schema-less formats.

• Relational databases: MySQL, Oracle, SQL Server

• Non-relational databases: MongoDB, Cassandra, Redis

• Relational databases use structured query language (SQL) for data manipulation

• Non-relational databases provide high scalability and flexibility

• Relational databases are suitable for complex, structured data

• Non-relational databases are suitab...read more

div is a block-level element while span is an inline element in HTML.

• div is used to group block-level elements and create sections on a webpage.

• span is used to style inline elements or group text within a block-level element.

• div elements create a line break before and after the element, while span does not.