On a Windows Server 2003 Active – Passive failover cluster, how do you find the node which is active?Answer: Using Cluster Administrator, connect to the cluster and select the SQL Server cluster. When you take a database offline, you the database is not available for users, it is not deleted physically, it can be brought back online. master, model, tempdb and msdb. User can also determine the order in which tasks run by creating job steps within a SQL Server Agent job. 49. Here you can check SQL Server Training details and SQL Videos for self learning. 5 NF – Practical constraints on info for justifying the many-to-many relationships. Explain Sql server authentication modes?Answer: Below are the two authentication modes of sql server –, 14. In case you’re searching for SQL Server DBA Interview Questions and answers for Experienced or Freshers, you are at the correct place. Dropping IndexDROP INDEX my_indexDropping DatabaseDROP DATABASE my_databaseDropping TableDROP TABLE my_tabledeleted when the connection that created it is closed. Multiple-row sub-query, where the subquery returns multiple rows, and, Multiple column sub-query, where the sub-query returns multiple columns. This is the answer that lets the interviewer know how suitable are you for the position to which you are being interviewed. What is it used for?Answer: Unindexed table or Heap. Explain the properties of a relational table?Answer: Below is the list of properties relational table should have –, 44. 31. Below is the example for the sameSELECT ROW_NUMBER() OVER(ORDER BY EmpSalary DESC) AS Row FROM Employees WHERE Emp Name Name IS NOT NULL. A query can contain more than one sub-query. DeNormalization – It is the process of accessing the data from higher to lower normalization forms. SQL Server DBA Interview Questions and answers for beginners and experts. 25. Here’s the basic syntax: (Also checkout SELECT in books online for advanced syntax). SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Introduction – Day 1 of 31 This function is used to return a non-null from more than one column in the arguments. What is the difference between Clustered and Non-Clustered Index?Answer: In a clustered index, the leaf level pages are the actual data pages of the table. How do we delete a login ? 27. 8. Job steps give the user control over the flow of execution. List of frequently asked SQL Server DBA Interview Questions with answers by Besant Technologies. information such as the time it took to execute that Job and details about the error occurred. SQL SERVER DBA Multiple Choice questions and answers pdf download for freshers experienced SQL SERVER DBA faqs,Objective certification Interview questions. Sql Interview Questions and Answers. Even parameters can be manipulated by the skilled and experienced attackers. The SQL Server agent plays a vital role in day to day tasks of SQL server administrator(DBA). What are statistics, under what circumstances they go out of date, how do you update them?Answer: A) Statistics determine the selectivity of the indexes. In SQL Server… The check constraints are used to enforce domain integrity. Every table should have a primary key constraint to uniquely identify each row and only one primary key constraint can be created for each table. 4 NF – Tables should not more than two relationships. 1) What is Windows Cluster? 20. SQL SERVER DBA Multiple Choice Questions :-1. 46. In this article, we’ll look at SQL server DBA interview questions and example answers. Top 50 Sql Server Dba Interview Questions And Answers Pdf SQL Server programs on-demand IT Pros, and Developers and drive your experiences to a new level. DROP LOGIN login_name C. A login cannot be deleted but only disabled D. DISABLE LOGIN login_name Ans: B 2. Relationships can be created to maintain the data in the table. 1. Download PDF. Union operator is used to combining all the results or records of the table and it removes the duplicate values. Note: Browse latest SQL Interview Questions and SQL Tutorial. 28. What is the difference between clustered and a non-clustered index?Answer: A clustered index is a special type of index that reorders the way records in the table are physically stored. This blog is the perfect guide for you to learn all the concepts related to SQL, Oracle, MS SQL Server and MySQL database. For example. Explain “NOT NULL Constraint” in Sql Server?Answer: “NOT NULL Constraint” is used in a column to make sure the value in the column is not null. What are the advantages of user-defined functions over stored procedures in Sql Server?Answer: User-Defined functions can be used in SELECT/WHERE/HAVING clauses whereas stored procedure cannot be called. Why use “PIVOT” in Sql Server?Answer: Pivot table automatically count, sort and total the data in a table or spreadsheet and used to create a separate table for displaying summarized data. A livelock also occurs when read transactions monopolize a table or page, forcing a write transaction to wait indefinitely. Microsoft Press Books and Book on Line (BOL) refers to it as Heap. 50. Explain Indexing and what are the advantages of it?Answer: Indexing contains pointers to the data in a table. 10. In this SQL Interview Questions blog, I will introduce you to the most frequently asked questions on SQL (Structured Query Language). List out the differences between the Clustered Index and Non-Clustered Index in Sql Server?Answer: Clustered Index – Clustered Index will reorder the number of records in a table and by default, the reordering will be done on the basis of the primary key as it default acts like a clustered index. A subquery is a query which can be nested inside the main query like Select, Update, Insert or Delete statements. To get @@error and @@rowcount at the same time do both in the same statement and store them in local variable. How many levels SP nesting is possible?Answer: Yes. 49. Enterprise Editions only supports log shipping. properly locate different DB objects across different tablespaces, files and so on. If there is a significant change in the key values in the index. One-to-Many relationships are implemented by splitting the data into two tables with primary key and foreign key relationships. A non clustered index is a special type of index in which the logical order of the index does not match the physical stored order of the rows on disk. 11. It’s important to think about how to show that knowledge to portray yourself as the best candidate for the job. What are the different types of Indexes available in SQL Server?Answer: The simplest answer to this is “Clustered and Non-Clustered Indexes”. There can only be one Clustered index on a table. SQL Server DBA Interview Questions and answers. What is the use of “JOIN” in Sql Server?Answer: “JOIN” is used to get the data from multiple tables by joining those. 40. What does man by SQL Wildcard Characters in Sql Server?Answer: WildCard Characters are used with “LIKE” operator in Sql Server. Why use Sub Query in Sql Server and List out types of Sub Queries?Answer: Sub Queries are queries within a query. So Indexing improves the performance as the retrieval of data takes less time. What are the commands used in DCL?Answer: GRANT, DENY and REVOKE. The publisher is the data source of a publication. For more questions with answers, follow the link below: What are the differences between Left join and Inner join in Sql Server?Answer: The left join will return all the rows from the left table and matching rows from the right table. E.g. The key feature of log shipping is that it will automatically backup transaction logs throughout the day and automatically restore them on the standby server at a defined interval. Explain unique key in Sql Server?Answer: Unique Key constraint will enforce the uniqueness of values in the list of columns of the table. Explain about your SQL Server DBA Experience?Answer: This is a generic question often asked by many interviewers. Depending on the recovery model of a database, the behavior of database log file changes. Which operator do you use to return all of the rows from one query except rows are returned in a second query?Answer: You use the EXCEPT operator to return all rows from one query except where duplicate rows are found in a second query. 24. Note: Browse latest SQL Interview Questions and SQL Tutorial. 18. | SQL Server DBA Mcqs. If one server fails, the other server will have the same DB and can be used as the Disaster Recovery plan. A sub query should not have ordered by clause. For exampleSELECT * FROM Employees WHERE City IN (‘Bangalore’,’Kochin’). A heap is a table that does not have a clustered index and, therefore, the pages are not linked by pointers. 40. SQL Server questions are very usefull for freshers to learn easly. A. DELETE LOGIN login_name B. 47. With Linked servers, we can create easy SQL statements which will allow remote data to be joined, combined and retrieved with data in local. 38. To achieve the desired job as SQL Server Dba Developer you need to go through the advanced topic in SQL Server Dba Interview Questions 2018 provided by SVR Technologies. What are the differences in Clustering in SQL Server 2005 and 2008 or 2008 R2?Answer: On SQL Server 2005, installing SQL Server failover cluster is a single step process whereas on SQL Server 2008 or above it is a multi-step process. Non-Clustered Index:- A Non-Clustered index is a special type of index in which the logical order of the index does not match the physical stored order of the rows in the disk. 23. SQL Server Interview Questions And Answers For Experienced 2020. “Having” clause used with SELECT clause and this is used with GROUP BY clause. 42. 22. This guide will help you to brush up your SQL skills, regain your confidence and be job ready! Explain Mixed authentication mode of sql server?Answer: A mixed-mode of authentication can either use SQL Server authentication or Windows authentication. This scheduling of jobs benefits to decrease human interference throughout the night time and feed can be produced at an appropriate time. How the authentication mode can be changed?Answer: Authentication mode can be changed using the following steps –Start -> Programs -> Microsoft SQL Server -> “SQL Enterprise Manager” and run SQL Enterprise Manager. Scalar – This type of functions are used for returning a single scalar value. Oracle has an OLE-DB provider for oracle that Microsoft provides to add it as linked server to SQL Server group. 4. In what sequence SQL statement is processed?Answer: The clauses of the select are processed in the following sequence, 45. The leaf node of a non clustered index does not consist of the data pages. Note: each answer is just one of many possible ways to address the question, and you may come up with better answers than the provided ones. What is a UNIQUE KEY constraint?Answer: A UNIQUE constraint enforces the uniqueness of the values in a set of columns, so no duplicate values are entered. The INTERSECT operator returns only those rows that exist in both queries. 32. Explain about unique identifier data type in Sql Server?Answer: Unique Identifier datatype mainly used for primary key columns of the tables or any other columns which need to have unique Ids. This questions are frequentlyasked in all interviews. But in case of update statement is fired both Inserted and Deleted table used for records the Original row before updation get store in the Deleted table and new row Updated get store in Inserted table. 14. Local temp table will be visible to only to the user who created and users of another session will not be able to see this. 5. What is Normalization and DeNormalization in Sql Server?Answer: 43. SQL Server DBA Interview Questions and Answers. Explain the Relational Database Management System (RDBMS)?Answer: RDBMS is a database management system which is used to maintain the data records in the tables and also indices in tables. What are the High-Availability solutions in SQL Server and differentiate them briefly?Answer: Failover Clustering, Database Mirroring, Log Shipping, and Replication are the High-Availability features available in SQL Server. 6. The IAM pages are the only structures that link the pages in a table together. But Youtube list contains answers for most of them. Which returns multiple row is a multiple-row subquery. What is a FOREIGN KEY?Answer: A FOREIGN KEY constraint prevents any actions that would destroy links between tables with the corresponding data values. One of the best known feature introduced in SQL Server 2012 is “AlwaysOn” which makes use of existing HA/DR features and provide additional features like Availability Groups. 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. 21. @@ERROR – Used to return the error code which is occurred due to the last SQL statement. 10. What are the operating modes in which Database Mirroring runs?Answer: Database Mirroring runs in 2 operating modes High-Safety Mode and High-Performance Mode. Top 50 SQL Server Interview Questions & Answers . Explain what are the different SQL Server Versions you have worked on, what kind of administration of those instances has been done by you. If the Service is displayed as (MSSQLSERVER), then it indicates it is a default instance, else there will be the Instance name displayed. Copy the structures same as source to destination index, the SQL Server group execute that and. Once after the rows are committed or rolled back no need to separately. 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