Cirrius Database Administrator DBA Interview Questions, Process, and Tips for Experienced

To install SQL Server on a laptop, download the installation file from Microsoft's website and follow the installation wizard.

• Download the SQL Server installation file from Microsoft's website

• Run the installation file and follow the installation wizard

• Choose the appropriate installation options, such as the edition and features

• Set up the necessary authentication and security settings

• Complete the installation process an

Joints are used to combine data from multiple tables in a database. There are different types of joints such as inner, outer, left, and right.

• Inner join returns only the matching rows from both tables

• Outer join returns all the rows from both tables and null values for non-matching rows

• Left join returns all the rows from the left table and matching rows from the right table

• Right join returns all the rows from the right

ORA-00600 is an internal error code that indicates a software bug or corrupted data.

• ORA-00600 is a generic error message that indicates an internal error has occurred.

• It is caused by a software bug or corrupted data.

• It is a critical error that requires immediate attention from the DBA.

• The error message includes a code that identifies the specific error.

• The error can be resolved by applying a patch or contacting Oracle ...read more

ORA-600 is an internal error code in Oracle database.

• It is a generic error that indicates that something unexpected has occurred within the database.

• It is usually accompanied by a detailed error message that provides more information about the cause of the error.

• It can be caused by a variety of factors, including software bugs, hardware failures, and data corruption.

• It is important to diagnose and resolve ORA-600 error...read more

Cloning high level steps involve creating a copy of an existing database or server.

• Identify the source database or server to be cloned

• Create a backup of the source database or server

• Restore the backup to a new location or server

• Modify the cloned database or server as needed

• Test the cloned database or server to ensure it functions properly

To add a datafile in a database, use the ALTER TABLESPACE statement.

• Connect to the database as a user with the necessary privileges.

• Identify the tablespace where you want to add the datafile.

• Use the ALTER TABLESPACE statement with the ADD DATAFILE clause to add the datafile.

• Specify the file name, size, and other attributes of the datafile.

• Example: ALTER TABLESPACE users ADD DATAFILE '/path/to/datafile.dbf' SIZE 100M;

A structured collection of data that is organized and managed to provide access and efficient retrieval of information.

• A database is a collection of related data that is organized in a specific way.

• It is designed to store, retrieve, and manage data efficiently.

• It can be used to store any type of data, such as text, images, videos, and more.

• Examples of databases include MySQL, Oracle, SQL Server, and MongoDB.

RDBMS stands for Relational Database Management System.

• It is a type of database management system that stores data in tables with relationships between them.

• It uses SQL (Structured Query Language) to manage and manipulate data.

• Examples include Oracle, MySQL, Microsoft SQL Server, and PostgreSQL.

Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

• Start from the first element and compare it with the next element

• If the next element is smaller, swap them

• Repeat this process for all elements in the array

• Continue this process until no more swaps are needed

A program to print all prime numbers

• Take input from user for range of numbers

• Loop through the range and check if each number is prime

• Print the prime numbers

Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

• Hashmap uses a hash function to map keys to indices in an array.

• Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

• Examples of hashmap implementations include Java's HashMap class and Python's dict type.

Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

• Inheritance allows code reuse and promotes code organization.

• The existing class is called the parent or superclass, and the new class is called the child or subclass.

• The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

• For...read more