Abacus Civilian School Plsql Developer Interview Questions and Answers

Q1. What is performing tuning?
Ans. 
Performance tuning is the process of optimizing the performance of a system or application.
• Identifying and resolving performance bottlenecks

• Optimizing database queries and indexes

• Improving hardware and network configurations

• Reducing resource usage and improving response time

• Monitoring and analyzing system performance
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Q1. Explain stored procedure and PLSQL concept in detail?
Ans. 
Stored procedure is a precompiled program that is stored in a database and can be called by other programs.
• Stored procedures are used to encapsulate business logic and improve performance.

• PL/SQL is a procedural language used to write stored procedures in Oracle databases.

• Stored procedures can accept input parameters and return output parameters or result sets.

• They can also be used to enforce security and data integrity...read more
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Oracle pl sql developer

Q1. Question based on PLSQL
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Q2. What is Execution Plan, Query Optimization
Ans. 
Execution plan is a roadmap created by the database optimizer to determine the most efficient way to execute a query.
• Execution plan shows the steps the database will take to execute a query.

• Query optimization involves finding the most efficient way to execute a query.

• Optimization techniques include index usage, join methods, and access paths.

• Understanding execution plans helps in tuning queries for better performance.
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Q1. Triggers , procedures , exception handling , collections, package
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Q2. Type , array, partition, performance tuning, AWR
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Q1. Basics of pl sql like cursor, triggers, sequences
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Q2. Performance tuning, basic queries on situations
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Q1. Just a discussion with HR
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Q1. Window Functions in SQL
Ans. 
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().
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Q1. Uses of Packages in PL/SQL
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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...read more
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Q1. 1.How to search a text in all database objects- search in all_source table 2.difference between procedure & function 3.difference between case & decode 4.write a query to delete duplicates from table 5.whi...read more
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Q1. Waiting for round 1 results
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