Sql Server 2008 Dba Interview Questions And Answers Pdf
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- SQL Server DBA Backup and Recovery Interview Questions
- SQL Server DBA Interview Questions and answers
- SQL Server DBA Interview Questions and Answers
What are the different types of backups?
There are a lot of opportunities from many reputed companies in the world. What purpose does the Model Database Server? The model database , as its name implies, serves as the model or template for all databases created on the same instance. If the model database is modified, all subsequent databases created on that instance will pick up those changes, but earlier created databases will not.
SQL Server DBA Backup and Recovery Interview Questions
How can it be changed? Therefore table can have only one clustered index. The leaf nodes of a clustered index contain the data pages. 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. The leaf node of a non clustered index does not consist of the data pages. Instead, the leaf nodes contain index rows. Kana Sensitivity — When Japanese kana characters Hiragana and Katakana are treated differently, it is called Kana sensitive.
Width sensitivity — A single-byte character half-width and the same character represented as a double-byte character full-width are treated differently than it is width sensitive. Using these rules complex information is broken down into its most simple structures a table where all of the individual atomic level elements relate to each other and satisfy the normalization rules.
But by default primary key creates a clustered index on the column, where are unique creates a nonclustered index by default. Truncate will actually remove all the rows from a table and there will be no data in the table after we run the truncate command.
The counter used by an identity for new rows is reset to the seed for the column. If a large amount of deletions any modification or Bulk Copy into the tables has occurred, it has to update the indexes to take these changes into account. A sub-query must be put in the right hand of the comparison operator, and. Multiple-row sub-query, where the sub-query returns multiple rows,. Multiple column sub-query, where the sub-query returns multiple columns. You can capture and save data about each event to a file or SQL Server table to analyze later.
For example, you can monitor a production environment to see which stored procedures are hampering performances by executing too slowly. Use SQL Profiler to monitor only the events in which you are interested.
If traces are becoming too large, you can filter them based on the information you want, so that only a subset of the event data is collected.
Monitoring too many events adds overhead to the server and the monitoring process and can cause the trace file or trace table to grow very large, especially when the monitoring process takes place over a long period of time. It is often overlooked as one of the main tools for SQL Server management. Its purpose is to ease the implementation of tasks for the DBA, with its full- function scheduling engine, which allows you to schedule your own jobs and scripts.
How much level SP nesting is possible? Because Transact-SQL supports recursion, you can write stored procedures that call themselves. Recursion can be defined as a method of problem solving wherein the solution is arrived at by repetitively applying it to subsets of the problem. A common application of recursive logic is to perform numeric computations that lend themselves to repetitive evaluation by the same processing steps. Stored procedures are nested when one stored procedure calls another or executes managed code by referencing a CLR routine, type, or aggregate.
You can nest stored procedures and managed code references up to 32 levels. Enterprise Editions only supports log shipping. In log shipping the transactional log file from one server is automatically updated into the backup database on the other server. If one server fails, the other server will have the same db and can be used this as the Disaster Recovery plan.
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 defined interval. What are the implications of having it OFF?
A global temporary table remains in the database permanently, but the rows exist only within a given connection. When connection is closed, the data in the global temporary table disappears. However, the table definition remains with the database for access when database is opened next time.
Save my name, email, and website in this browser for the next time I comment. Quick Enquiry Request a call back. Net ASP. Net C. Net VB. Answer: Case sensitivity — A and a, B and b, etc. Accent sensitivity Kana Sensitivity — When Japanese kana characters Hiragana and Katakana are treated differently, it is called Kana sensitive. Answer: Properties of Sub-Query A sub-query must be enclosed in the parenthesis. A query can contain more than one sub-query.
Types of Sub-Query Single-row sub-query, where the sub-query returns only one row. Previous: VB. NET Interview Questions and answers. Next: Manual Testing Interview Questions and answers. Leave a Reply Cancel reply. Quick Enquiry. Categories Categories Select Category. Follow us on facebook twitter instagram youtube linkedin.
SQL Server DBA Interview Questions and answers
This tip has interview style questions graded as either easy, moderate or advanced related to SQL Server backup and recovery. Check out the questions and good luck! On question 4 - Moderate On Question 4 Easy , there are rare instances where the VerifyOnly restore will return valid but the backup is still bad. I'm not completely sure why this happens, but it does.
Home page Contact Us. Net DWH New. What is Sql server? SQL - Structured query language is the standard command set used to communicate with the relational database management system. Sql server - is commonly used as the backend system for websites and corporate CRMs and can support thousands of concurrent users. SQL Server is much more robust and scalable than a desktop database management system such as Microsoft Access. All Rights Reserved.
SQL Server DBA Interview Questions and Answers
Relationships may be created and maintained across and among the data and tables. In a relational database, relationships between data items are expressed by means of tables. Interdependencies among these tables are expressed by data values rather than by pointers. This allows a high degree of data independence.
Ans: Yes! Adding CPUs can occur physically by adding new hardware, logically by online hardware partitioning, or virtually through a virtualization layer. Requires hardware that supports hot-add CPU. How can we check whether the port number is connecting or not on a Server? What is the port numbers used for SQL Server services?
How can it be changed? Therefore table can have only one clustered index. The leaf nodes of a clustered index contain the data pages.
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Download PDF 1. What are the two authentication modes in SQL Server? There are two authentication modes — Windows Mode Mixed Mode Modes can be changed by selecting the tools menu of SQL Server configuration properties and choose security page. This is mainly used to capture and save data about each event of a file or a table for analysis. What is recursive stored procedure?
Не открыв своего алгоритма, он доказал АНБ, что тот не поддается дешифровке. Стратмор протянул Сьюзан газетную вырезку. Это был перевод рекламного сообщения Никкей симбун, японского аналога Уолл-стрит джорнал, о том, что японский программист Энсей Танкадо открыл математическую формулу, с помощью которой можно создавать не поддающиеся взлому шифры.
Не ожидал, что вы придете. - Да, я. - Она наклонилась к микрофону и четко произнесла: - Сьюзан Флетчер. Компьютер немедленно распознал частоту ее голоса, и дверь, щелкнув, открылась.
Сьюзан посмотрела на него и едва не рассмеялась. Невозможно. Что это должно означать. Такого понятия, как шифр, не поддающийся взлому, не существует: на некоторые из них требуется больше времени, но любой шифр можно вскрыть.
Проваливай и умри. Дэвид даже вздрогнул от неожиданности. - Простите. - Проваливай и умри, - повторил немец, приложив левую ладонь к жирному правому локтю, имитируя итальянский жест, символизирующий грязное ругательство. Но Беккер слишком устал, чтобы обращать внимание на оскорбления.
Под визг покрышек, в снопе искр Беккер резко свернул вправо и съехал с дороги. Колеса мотоцикла подпрыгнули, ударившись о бетонное ограждение, так что он едва сумел сохранить равновесие. Из-под колес взметнулся гравий.