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I applied via Recruitment Consulltant and was interviewed in Dec 2024. There was 1 interview round.
Public and private procedures in PL/SQL control the visibility and accessibility of procedures within a package.
Public procedures can be accessed by other packages or programs outside the package.
Private procedures can only be accessed within the package where they are defined.
Public procedures are declared in the package specification using the 'PUBLIC' keyword.
Private procedures are declared in the package body witho...
I applied via Recruitment Consulltant and was interviewed in Dec 2024. There was 1 interview round.
I applied via Naukri.com and was interviewed in Jan 2024. There were 2 interview rounds.
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I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
Optimizing stored procedures involves using proper indexing, reducing unnecessary loops, and minimizing database calls.
Use proper indexing on columns used in WHERE clauses to improve query performance
Avoid using cursors and loops whenever possible, as they can be inefficient
Minimize the number of database calls by combining multiple queries into a single query or using temporary tables
Consider using bulk processing tec...
Optimizing SQL queries involves using indexes, minimizing data retrieval, avoiding unnecessary joins, and optimizing query structure.
Use indexes on columns frequently used in WHERE clauses
Minimize data retrieval by selecting only necessary columns
Avoid unnecessary joins by using EXISTS or IN clauses instead
Optimize query structure by using appropriate join types and conditions
Returning clause is used to return a value from a function or procedure in PL/SQL.
Used to return a single value from a function or procedure
Can be used to return multiple values using OUT parameters
Helps in passing values back to the calling program
Triggers can lead to performance issues, complexity, and potential for unintended consequences.
Triggers can make code harder to debug and maintain
They can lead to cascading effects if not carefully implemented
Performance can be impacted if triggers are not optimized
Triggers can introduce dependencies between different parts of the codebase
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
Developed a PL/SQL project for managing inventory and sales data in a retail store.
Designed database tables to store product information, sales transactions, and customer details.
Implemented PL/SQL procedures and functions for adding, updating, and querying data.
Created triggers to enforce business rules and maintain data integrity.
Developed reports using PL/SQL queries to analyze sales performance and inventory levels
I work on performance optimization by analyzing query execution plans, indexing, and code refactoring.
Analyzing query execution plans to identify bottlenecks
Creating appropriate indexes to improve query performance
Refactoring code to optimize resource usage
Using tools like Explain Plan and SQL Tuning Advisor
I applied via Approached by Company and was interviewed in Sep 2023. There were 3 interview rounds.
Window functions in SQL are used to perform calculations across a set of table rows related to the current row.
Window functions are used to calculate values based on a set of rows related to the current row.
They allow you to perform calculations without grouping the rows into a single output row.
Examples of window functions include ROW_NUMBER(), RANK(), and LAG().
Packages in PL/SQL are used to group related procedures, functions, variables, and other PL/SQL constructs together for better organization and security.
Packages help in modularizing code for easier maintenance and debugging
They provide encapsulation and hide implementation details
Packages can contain multiple procedures, functions, variables, cursors, and exceptions
They improve performance by reducing network traffic
E...
Create a function based on shared logic
Identify common logic that can be reused in multiple functions
Create a separate function to encapsulate the shared logic
Call the shared function from other functions where the logic is needed
I applied via Referral and was interviewed before Jun 2023. There was 1 interview round.
Oracle pl sql developer
Factorial of a number is the product of all positive integers up to that number.
To calculate factorial of a number, multiply all positive integers up to that number.
Factorial of 0 is 1.
Example: Factorial of 5 is 5*4*3*2*1 = 120.
Modelling of schema involves designing the structure of a database to organize and represent data.
Identify entities and their relationships
Define attributes for each entity
Establish primary and foreign keys
Normalize the schema to reduce redundancy
Consider performance and scalability
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