sql server dba introduction

18. Create and use a view tableView tableView table conceptsCreate a viewModify and delete a tableEnhanced viewing table functionality in SQL Server 2000SummaryIn Chapter 17th, we learned about indexes. indexes are a secondary database structure independent of the database data structure, but they are related to accessing database data. In other words, an index is an independent structure, but is integrated

systems of the DMV .... Various log lookups .... You look at them. MySQL's powerful graphical interface hints give you a glimpse of the current database's problems.Indeed, take a look at the graphical operational interface provided by MySQLIs his Niang handsome, the overall platform for the division is very detailed: network, instance status, storage state.And there's a graphical display interface that looks elegant.The content reflected in the above interface is very convenient for finding the

, so in some cases SQL injection attacks are more risky than all other vulnerabilities.SQL injection attacks take advantage of SQL syntax, which makes this attack extensive. Theoretically, for all SQL language-based database software including SQL Server,oracle,mysql, Db2,in

If you are in charge of a SQL Server-based project or you have just been in touch with SQL Server, you may have to face some database performance problems, this article will provide you with some useful guidance (most of which can also be used for other DBMS ).Here, I am not going to introduce the tips for using

, and memory management is not as good as the first one, and there may be a performance penalty.If a SQL Server virtual machine requires 16 virtual CPUs to cope with the workload. So, what is the optimization of the following configuration options? 1 Virtual Slots (16 virtual cores). 2 virtual slots, 8 virtual cores per second. 4 virtual slots, 4 virtual cores per second. 8 virtual slot

Label:This series of articles from Sqlservercentral, please refer to the original text for details. SQL Server Agent is the job scheduling and alerting service for SQL Server, which can greatly simplify the workload of the DBA if used properly.The core of

years of careful creation, in 2005, the strong introduction of SQL Server 2005, this is since the SQL Server 2000 after another masterpiece. This enterprise-class database solution includes the following aspects: Database Engine Services, data mining, Analysis Services, Int

Over the past few years, many companies have streamlined their IT departments. Many database administrators (DBAs) have to manage a large amount of SQL Server databases. What's worse is that there is often no real DBA, but you can find someone to act as a real DBA. In addition, sometimes DBAs become fire fighters and a

the query is large. If the maximum available memory is not limited, the SQL Server will occupy more memory because the available memory is reduced. In this regard, we can generally achieve parameterized query in two ways: first, use stored procedures to execute SQL statements as much as possible (which has become a principle of

Let's first take a look at what data mirroring is: Now almost all applications are based on the database, then the load of the database is relatively large, in 24 hours a day, any time there will be data to be saved to the database, or from the database to read data. Any time a user will be connected to our database server, dozens of, hundreds of or even tens of thousands of users to connect to use our database, so whether the planned downtime or unp

, especially when the query is large. If the maximum available memory is not limited, the SQL Server will occupy more memory because the available memory is reduced. In this regard, we can generally achieve parameterized query in two ways: first, use stored procedures to execute SQL statements as much as possible (which has become a principle of

Tags: style blog http io color OS using SP strongOriginal: SQL Server Enterprise Platform Management Practice reading notes--about how SQL Server databases are backed upData backup has always been considered a database of life, that is, one of the main skills of a DBA, this

The impact of Tempdb on SQL Server performance optimization and tempdb Performance Optimization First, consolidate the basic knowledge of tempdb. Introduction: Tempdb is an important part of SQLServer, which is used to store temporary objects. Tempdb is an SQL Server writer.

"DBA Common management Tools" SSMS, BIDS, SQL serverprofiler ... One, SQL Server common management tools 1. SQL Server Management Studio Used to access, control, manage, and develop all of the components of

Build an application to extract the estimated execution cost of the query from its XML Showplan. Users can only submit queries that cost less than a predetermined threshold to a server running SQL Server 2005, ensuring that the server is not overloaded with costly, long-running queries. First,

Tags: src report Introduction to Oracle. COM Stat ROM Understanding testThis blog record in a one-time testing process, the location of high CPU utilization bottleneck problem, the main location of SQL is subject to One, sql command positioning 1. first with top command monitoring system resources, if aix system, use topas top When scrolling da

Tags: Scroll method prepare win section data body multiple ICAThe most obvious feature of SQL differs from other programming languages is the order in which the code is processed. In a large number programming language, code is processed in encoded order, but in the SQL language, the first processed clause is the FROM clause, although the SELECT statement first appears, but is almost always finally processe

is set to true, when the where predicate specifies a column not on any index, the column statistics will be created, but there are two exceptions: The cost of creating statistics exceeds the cost of generating a query plan Statistics are not automatically generated when SQL Server is busy. You can view these statistics in the System View SYS. Stats, as shown in figure 7. Figure 7.

This article discusses how to improve the performance of SQL Server databases. BKJIA database channel recommends "getting started with SQL Server" to help you better understand SQL Server databases. 1.

[Introduction: the basic theories of locks used by various large databases are consistent, but their implementations vary. SQL Server emphasizes that the system manages locks. When a user has an SQL request, the system analysis request automatically adds an appropriate lock to the database between the locking condition