Productivity Aids Plsql Developer Interview Questions and Answers

Q1. What is plsql and sql
Ans. 
PL/SQL is a procedural extension of SQL used for writing stored procedures, functions, triggers, and packages in Oracle databases.
• PL/SQL stands for Procedural Language/Structured Query Language

• It is used to write procedural code like stored procedures, functions, triggers, and packages in Oracle databases

• SQL (Structured Query Language) is a standard language for accessing and manipulating databases

• SQL is used to query,...read more
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Questions on plsql and sql in general

3omins of coding knowledge testing

Q1. Client round to check the pervious project knowledge, present requirement testing
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Q2. Tell me about your current project
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Q1. Basicaly salary negotiation
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Q1. Difference between delete, drop and truncate
Ans. 
Delete removes rows from a table, drop removes the entire table, and truncate removes all rows from a table.
• Delete is a DML operation and can be rolled back, but it is slower than truncate.

• Drop is a DDL operation and cannot be rolled back. It removes the table and all associated objects.

• Truncate is a DDL operation and cannot be rolled back. It removes all rows from the table but keeps the table structure.

• Delete and tru...read more
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Q2. Difference between table and view
Ans. 
Table stores data in a structured format while view is a virtual table created from a query.
• Table is a physical object while view is a logical object.

• Table can be modified while view cannot be modified directly.

• Table can have indexes while view cannot have indexes.

• Table can have constraints while view cannot have constraints.

• View can be used to simplify complex queries by joining multiple tables.

• View can be used to res...read more
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Q3. What type of cursors did you use
Ans. 
I have used both implicit and explicit cursors in PL/SQL development.
• Implicit cursors are used for single-row queries while explicit cursors are used for multi-row queries.

• I have used explicit cursors with parameters to make the query more dynamic.

• I have also used cursor variables to pass cursors as parameters to procedures and functions.

• Examples of cursor types I have used include FOR LOOP, FETCH, and UPDATE cursors.
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Q4. What is primary key and unique key
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Primary key uniquely identifies a record in a table, while unique key ensures uniqueness of a column or set of columns.
• Primary key is a column or set of columns that uniquely identifies each record in a table

• Unique key ensures that a column or set of columns have unique values

• Primary key cannot have null values, while unique key can have null values

• A table can have only one primary key, but multiple unique keys
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Q1. Basic self introduction
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Q2. Tell me about your self
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Q1. It was a virtual technical round. About basic sql and Adv plsql question
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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. Asked few SQL queries from basics to intermediate level, and asked to write plsql code with exceptions . Increased difficulty level in the same program step by step.
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Q1. Basic SQL related question
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Q2. Good knowledge on pl SQL is preferred, few in-depth questions . Keep your cool and answer every question with best of your knowledge
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