Let’s now talk about two more components: Transaction Manager and Buffer Manager Secondary Files (.ndf): This is an optional file that holds user-specific data. Transaction logs are also called write-ahead logs. They help to recover the database in case of failure.
Transaction Log Files(.ldf): These files are used for transaction management.
This is the file that stores the database objects: tables, views, stored procedures etc. These are explained below:ĭata Files (.mdf): This is also called the Primary File. The types of files stored by the storage engine includes transaction log files (.ldf ) and data files(mdf). The function of the Storage Engine is to store data in some storage. This is core storage area of the architecture. Query Executor – This actually executes the query by first calling the Access Method and providing an execution plan for fetching data. The execution plan specifies how the query would be executed. Query Optimizer – This creates and execution plan for the query. It checks to make sure that the query is correct (check error in syntax and semantics). When necessary, it request data from the data storage engine, processes and sends back the result to the client.ĬMD Parser – This is the first component that receives the query.
SQL SERVER CLIENT COMPONENTS HOW TO
It also handle how to improve performance of the query. This component determines what operations would be executed by a query. This is also known as the Query Processor or simply the Relational Engine (Relational Layer in Figure 1). The client and the server could be on different machines or locations. This could be over the internet or on a local network. TCP/IP: Here, the client and the server communicate via TCP/IP protocol. Named Pipes: Here, the client and the server reside in the same local network. Shared Memory: For this protocol, both the client and the server runs on the same machine
SQL SERVER CLIENT COMPONENTS WINDOWS
These can be see in the SQL Server configuration manager windows shown below: SQL Server Protocols (Configuration Manager) MS SQL server support three types of client-server protocols This Layer specified the communication between the client and the database server. The complete architecture is presented in Figure 1 below: Figure 1: MS SQL Server Architecture The three components of the SQL Server architecture would be covered: In this lesson, we would examine the architecture of SQL Server.
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