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What are the basic SQL questions asked in interview?

What are the basic SQL questions asked in interview?

SQL Interview Questions

  • What is Database?
  • What is DBMS?
  • What is RDBMS?
  • What is SQL?
  • What is the difference between SQL and MySQL?
  • What are Tables and Fields?
  • What are Constraints in SQL?
  • What is a Primary Key?

What is SQL Server interview questions?

SQL Server Interview Questions

  1. How to create a database in SQL Server? A database is an organized file of data.
  2. What is SQL?
  3. What is PL/SQL?
  4. What is the difference between SQL and PL/SQL?
  5. What is RDBMS?
  6. What is a database table?
  7. How do you create a table in SQL?
  8. How to delete a table in SQL Server?

What are the important topics in SQL Server?

10 SQL Concepts That Every Developer Should Know

  • SQL is Relational Database. There are various database systems such as Relational, Hierarchical, Document, etc.
  • Keys in SQL.
  • Views in SQL.
  • SQL Joins.
  • Normalization of Database.
  • Transactions in SQL.
  • Subqueries in SQL.
  • Cloning Tables in SQL.

What are the 5 basic SQL commands?

Some of The Most Important SQL Commands

  • SELECT – extracts data from a database.
  • UPDATE – updates data in a database.
  • DELETE – deletes data from a database.
  • INSERT INTO – inserts new data into a database.
  • CREATE DATABASE – creates a new database.
  • ALTER DATABASE – modifies a database.
  • CREATE TABLE – creates a new table.

How do I prepare for SQL interview?

Next steps: Preparing for your SQL interview

  1. Retrieve Data using Single-Table SQL Queries.
  2. Retrieve Data with Multiple-Table SQL Queries.
  3. Querying Databases Using SQL SELECT statement.
  4. Aggregate Data in SQL using MySQL Workbench.
  5. Mastering SQL Joins.
  6. SQL CASE Statements.

What is temp table in SQL?

What is a temp table? As its name indicates, temporary tables are used to store data temporarily and they can perform CRUD (Create, Read, Update, and Delete), join, and some other operations like the persistent database tables.

What is SQL Fullform?

Structured Query LanguageSQL / Full name

What is the primary key?

A primary key is the column or columns that contain values that uniquely identify each row in a table. A database table must have a primary key for Optim to insert, update, restore, or delete data from a database table.

What is Row_Number () in SQL?

SQL ROW_NUMBER Function ROW_NUMBER function is a SQL ranking function that assigns a sequential rank number to each new record in a partition. When the SQL Server ROW NUMBER function detects two identical values in the same partition, it assigns different rank numbers to both.

How many types of SQL are there?

There are five types of SQL commands: DDL, DML, DCL, TCL, and DQL.

What is the difference between CTE and temp table?

Temp Tables are physically created in the tempdb database. These tables act as the normal table and also can have constraints, an index like normal tables. CTE is a named temporary result set which is used to manipulate the complex sub-queries data. This exists for the scope of a statement.

What are the interview questions for SQL Server DBA?

Sql Server Interview Questions And Answers Pdf 1. Explain about your SQL Server DBA Experience? Answer: This is a generic question often asked by many interviewers. Explain what are the different SQL Server Versions you have worked on, what kind of administration of those instances has been done by you.

What version of SQL Server do you have experience with?

Answer: The answer would be depending on the versions you have worked on, I would say I have experience working in SQL Server 7, SQL Server 2000, 2005 and 2008. If you have worked only some version be honest in saying that, remember, no one would be working on all versions, it varies from individual to individual.

What happens if one job fails in SQL Server?

If one job fails, the user can configure SQL Server Agent to continue to run the remaining tasks or to stop the execution. 31. What are the advantages of using Stored Procedures? Answer: The stored procedure can reduce network traffic and latency, boosting application performance.

What are the chances of getting a job in SQL Server DBA?

There are loads of chances from various reputed corporations in the business. According to analysis, SQL Server Dba has a business share of around 1.6%. So, you, however, have a chance to move forward in your career in SQL Server Dba Development.