ODBC applications have the power to access data in a lot of leading database management systems (DBMS) through the use of ODBC drivers that have encrypted access. To run ODBC applications it is imperative that programmers get familiar with both ODBC programming and managing SQL Server.
In architecture, Microsoft SQL Server ODBC driver has to employ the components of standard SQL Server needed in the communication process between the client application and the database server. The ODBC driver can disregard the older versions of the SQL Server because the ODBS driver can directly write data to the same Net-Library layer that is employed by the DB Library.
The ODBC driver manager which looks like a very slim layer is able to manage communications that take place between the working application per se and the ODBC drivers. ODBC driver manager specifically loads the available modules found in the drivers and then delivers all the ODBC requests to the driver.
The SQL Server ODBC driver is the single DLL (Dynamic Link Library) that replies to all calls made by the applications to the ODBC application programming interface. It can also do data translation, wherein the statements that came from applications that contain syntax not supported by SQL Server into Transact-SQL syntax which in turn gets passed to the server.
The SQL Server Client Network Library allows the communications that take place in the driver via the SQL Net-Libraries Server and the Tabular Data Stream. The protocol for SQL Server TDS is in fact a half-duplex procedure that contains self-sufficient result sets. Such results are optimized with an access to the database.
The ODBC driver manager, SQL Server ODBC driver, and the SQL Server Client Network Library are just some of the components in the architecture of Microsoft SQL Server that employs ODBC.
Microsoft has become the leading trendsetter of applications employed by many organizations and business enterprises. Its role as a provider of solutions, applications, and tools in developing and managing databases has become indispensable. Hence, technologies like the SQL Server Replication has come to a test when it comes to copying and distributing data and other database objects which in turn will provide database and consistency and synchronization.
The technology of SQL Server Replication does not only allow copying and distribution of data to maintain data management consistency and harmonization but the distribution of such data across locations. This means that through SQL Server Replication, different locations such as remote end-users, mobile users from the wide-ranging area networks, dial up connection users, and even wireless connection users or web users will become part of the data distribution.
When it comes to server-to-server scenarios, transactional replication is employed because it requires high volume of data to be handled so that scalability and availability will be enhanced. Also, through transactional replication data warehousing, integration of data that comes from multiple-level sites, combination of diverse data, and the processing of delegated operations.
Another type of SQL Server Replication is the merge replication which was formulated to chiefly process mobile applications and other server applications that have possibilities of causing conflicts. Some of the recurring conflicting scenarios are: the exchange of data among mobile users, the applications for Point of Sales, and the integration and management of data from a manifold of sites.
Finally, snapshot replication is designed to give preliminary set of data from transactional and merge replication. More so, snapshot replication is also capable of completely refreshing data that deemed to be suitable.
The three replication types only shows how SQL server can become so powerful in terms of synchronizing and making the system flexible found in every enterprise.
The first Microsoft SQL Server version was released in 1989 and was named SQL Server 1.0. As years passed by, Microsoft continuously developed and released enhanced SQL Server versions. But with the many versions of SQL Server the company has released, it never created something with the name “SQL Server 2003.” However, there are still people who keep on saying that there is an SQL Server 2003. Well, officially, there is no such SQL Server version. The “SQL Server 2003” that people refer to is the SQL Server 2000 64-bit Edition which was released in the year 2003. This is also called as the SQL Server version 8.0.
Compared to its predecessors, the SQL Server 2003 offers improved memory and better processing performance. However, this version was never successful compared to its successors like the SQL Server 2005. Some experts say that the SQL Server 2003 is just like the SQL Server 2000. They only differ on the platform where they can be used. The 2000 edition is for 32-bit platforms while the 2003 is for the 64-bit platforms.
Anyway, there are still organizations relying on the SQL Server 2003 because they specially need a 64-bit platform. But not a tremendous number of organizations are using this kind of platform, and so, they end up using later versions like the SQL Server 2005.
Students or IT professionals who are interested to dig deeper on the functionalities of the SQL Server 2003 and its differences compared with other versions can easily find books on the topic. There are downloadable ebooks about the SQL Server 2003 discussing its different features and functionalities.