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I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
A view is a virtual table created by a query. It does not store data itself but displays data from one or more tables. Views can be used for querying data as if it were a table.
Views are created using a SELECT statement with optional joins, WHERE clauses, etc.
Views can simplify complex queries by pre-defining joins and filters.
Views do not store data themselves, they display data from underlying tables.
Views can be upd...
A synonym is an alternative name for a table, view, sequence, or other database object.
Synonyms can be used to provide a different name for an object, making it easier to reference.
They can be created to reference objects in other schemas or databases.
Synonyms can be public (accessible to all users) or private (accessible only to the creator).
A sequence is a database object in Oracle that generates unique numbers in a specified order.
Used to generate unique numbers for primary key columns
Can be used in INSERT statements to automatically generate values
Can be defined to increment by a specific value and start at a specific number
Procedures are named PL/SQL blocks that perform a specific task. They can accept parameters and return values.
Procedures are stored in the database and can be called by other PL/SQL blocks or applications.
They can accept input parameters to perform operations and can also return output values.
Procedures help in modularizing code and promoting reusability.
Example: CREATE PROCEDURE calculate_salary (emp_id IN NUMBER) IS
Procedures do not return any value while functions return a value.
Procedures are used to perform an action, while functions are used to calculate and return a value.
Procedures do not have a return statement, while functions must have a return statement.
Functions can be called from SQL queries, while procedures cannot be called directly in SQL queries.
Partitions in PL/SQL are used to divide a table into smaller, more manageable pieces.
Partitions help improve query performance by allowing data to be stored in separate segments based on a specified criteria.
Common partitioning methods include range, hash, list, and composite partitioning.
Example: Partitioning a sales table by month can improve query performance when searching for sales data within a specific time fram
PL/SQL is a procedural extension of SQL used for writing stored procedures, functions, triggers, and packages in Oracle databases.
PL/SQL allows for procedural programming, including loops, conditions, and exception handling.
SQL is a declarative language used for querying and manipulating data in databases.
PL/SQL code is executed on the server side, while SQL queries are executed on the client side.
PL/SQL can be used to...
Performance tuning is the process of optimizing the speed and efficiency of a database system.
Identifying and resolving bottlenecks in the database system
Optimizing SQL queries for better performance
Improving indexing and partitioning strategies
Monitoring and analyzing system performance metrics
Utilizing tools like explain plan and SQL tuning advisor
Implementing caching mechanisms to reduce data retrieval time
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I applied via Naukri.com and was interviewed in Oct 2022. There were 3 interview rounds.
Accenture interview questions for designations
I applied via Naukri.com and was interviewed before Jul 2021. There were 2 interview rounds.
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
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...
Get interview-ready with Top Accenture Interview Questions
I was interviewed in Jan 2025.
Case and decode are conditional expressions in PL/SQL used for data manipulation.
CASE is used for conditional logic in SQL statements, while DECODE is used for conditional logic in SELECT statements.
CASE is more flexible and can handle multiple conditions, while DECODE is limited to one condition.
CASE can be used in both SQL and PL/SQL, while DECODE is specific to SQL.
Example of CASE: SELECT CASE WHEN condition1 THEN r...
Primary key uniquely identifies each record in a table, while foreign key establishes a link between two tables.
Primary key ensures uniqueness and cannot have null values
Foreign key establishes a relationship between tables based on the primary key of another table
Example of primary key: EmployeeID in an Employee table
Example of foreign key: DepartmentID in an Employee table linking to DepartmentID in a Department tabl
Rank assigns unique ranks to each distinct row, while Dense Rank assigns consecutive ranks without gaps.
Rank may have gaps in the ranking sequence, while Dense Rank does not.
Rank assigns the same rank to rows with the same values, while Dense Rank assigns different ranks.
Rank function is non-consecutive, while Dense Rank function is consecutive.
Procedures are used to perform an action, while functions return a value.
Procedures do not return a value, while functions do.
Functions can be called from SQL queries, while procedures cannot.
Functions must return a value, while procedures do not necessarily have to.
No, a package body cannot be used without a package specification.
A package body must always be associated with a package specification.
The package specification defines the public interface of the package, while the package body contains the implementation details.
Attempting to use a package body without a corresponding package specification will result in compilation errors.
Use a SQL query with GROUP BY and HAVING clause to find duplicate values in a database.
Use GROUP BY clause to group the values that are duplicated.
Use HAVING clause to filter out the groups that have more than one occurrence.
Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name HAVING COUNT(*) > 1;
Group by and having clause are used together to filter groups based on specified conditions.
Group by clause is used to group rows that have the same values into summary rows.
Having clause is used to filter groups based on specified conditions.
Example: SELECT department, AVG(salary) FROM employees GROUP BY department HAVING AVG(salary) > 5000;
Substr function extracts a substring from a string, while Instr function returns the position of a substring within a string.
Substr function syntax: SUBSTR(string, start_position, length)
Example: SUBSTR('Hello World', 7, 5) will return 'World'
Instr function syntax: INSTR(string, substring)
Example: INSTR('Hello World', 'World') will return 7
Writing a SQL query with a subquery involves nesting one query inside another to retrieve specific data.
Start by writing the main query that will retrieve the primary data
Identify the criteria for the subquery to filter the results
Enclose the subquery within parentheses and use it in the WHERE or FROM clause of the main query
Ensure that the subquery returns a single value or a single column result
Char is fixed length, varchar is variable length with max 4000 bytes, varchar2 is variable length with max 32767 bytes.
Char is fixed length and always right-padded with spaces, while varchar and varchar2 are variable length.
Varchar can store up to 4000 bytes of data, while varchar2 can store up to 32767 bytes.
Char is less efficient in terms of storage compared to varchar and varchar2.
No, it is not possible to combine two tables with differing data and columns without utilizing joins.
Joins are necessary to combine tables based on a common column or key.
Different data and columns require a join to match and merge the data properly.
Examples of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.
Yes, it is possible to update data in a view using INSTEAD OF triggers.
Views are virtual tables that display data from one or more tables.
By using INSTEAD OF triggers, you can update data in a view by specifying the logic to handle the update operation.
The trigger intercepts the update operation on the view and executes the specified logic to update the underlying tables.
For example, you can create an INSTEAD OF trigge...
TCS is a global IT services company known for its innovative solutions and commitment to employee growth.
TCS has a strong reputation in the IT industry for delivering high-quality services.
TCS offers opportunities for professional growth and development through training programs and career advancement.
TCS has a diverse and inclusive work culture that values teamwork and collaboration.
A dynamic cursor in database management allows for the execution of different SQL queries at runtime.
Dynamic cursors are used when the SQL query to be executed is not known until runtime.
They allow for flexibility in querying the database based on user input or other conditions.
Dynamic cursors can be used to handle varying result sets or conditions in a more efficient manner.
Example: Using a dynamic cursor to search fo...
Yes, I have performed performance tuning by identifying bottlenecks and optimizing queries.
Identified slow queries using tools like SQL Trace, Explain Plan, and AWR reports.
Optimized queries by adding indexes, rewriting SQL statements, and reducing unnecessary data retrieval.
Tuned PL/SQL code by using bulk processing, minimizing context switches, and optimizing loops.
Utilized database features like partitioning and mat
A package in PL/SQL is a collection of related procedures, functions, variables, and other constructs.
A package consists of two parts: package specification and package body.
The package specification defines the public interface of the package, including declarations of variables, constants, cursors, procedures, and functions.
The package body contains the actual implementation of the procedures and functions declared i...
I am excited about the opportunity to work with a global leader like TCS and contribute to innovative projects.
TCS is a renowned global company with a strong reputation in the IT industry
I am impressed by TCS's commitment to innovation and cutting-edge technology
I believe TCS offers great opportunities for professional growth and development
I am excited about the chance to work on diverse and challenging projects at TC
I prefer to discuss my salary expectations based on the responsibilities and requirements of the position.
Focus on discussing salary expectations based on the job responsibilities and requirements.
Avoid disclosing specific current salary package.
Emphasize the importance of fair compensation based on market rates and skills.
Provide examples of successful projects or achievements that demonstrate your value.
Discuss oppor...
I am looking for a competitive salary package based on my experience and skills.
I am open to discussing salary based on the responsibilities and requirements of the role.
I have researched the average salary range for Plsql Developers in this location.
I am looking for a package that includes benefits such as healthcare, retirement plans, and professional development opportunities.
Yes, I am comfortable with shift work and have experience working various shifts.
I have previous experience working different shifts in my current/previous roles.
I am flexible with my schedule and can easily adapt to changing shift patterns.
I understand the importance of shift work in ensuring 24/7 coverage for critical systems.
Yes, I am open to any location for the Plsql Developer position.
I am willing to relocate for the right opportunity
I am open to working in different cities or countries
I am flexible with travel requirements for the job
I was interviewed in Nov 2024.
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
I applied via Naukri.com and was interviewed in Aug 2023. There were 4 interview rounds.
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