Microsoft T-sql Coding Standards
Microsoft T sql Coding Standards
Know About SQL
SQL seems to be the same basic concept in case you are familiar with databases. But let us make it more generic and view from the perspective of a layman who has no idea of any database. SQL is the short form of Structured. SQL statements have a special format defined. It has some special terms and conditions of tags that are arranged in a certain order.
Why SQL is required to be structured. Digging up the necessary information, we often ask questions or inquiries, and expect answers in the form of some decent data. SQL shares the same manner as a query that returns the data relevant and accurate. Language keyword is to respond to SQL in a way that other technical methods of standard script to follow certain predefined specifications.
Data can be stored in simple text files, Excel spreadsheets or databases. management systems, databases or database such as Microsoft Access are data containers in an organized manner. The data are organized in tables. The tables have rows and columns. Each attribute value is stored in these columns resulting in the lines.
These lines represent register. When a certain relationship is created between the tables, the database is called relational database relational databases (RDBMS) such as Microsoft SQL Server 2000. When a database is also concerned with objects, called DBMS object / relational (RDBMS) like Oracle. SQL acts as a tool to interact with these databases to different levels of data units.
With SQL, we can add new information needed to plan. SQL can also help us to manage and manipulate data. You can delete or modify rows in the record. And possible to delete an entire table or other parts of the database. It can also create a new table and its related objects. This indicates that the SQL may contain information and the database structure to lock. Can help manage and control a system database. Many users access the database. You can set permissions, permits and privileges limited, we can help SQL functionality.
The original version of SQL is designed to support only a simple database. But with the advent of new advanced features of databases of different software vendors had begun its own modified version of SQL database management system. Each version of the database, and new features were added to SQL statements. Some of them had expired. Compared to the original version, the latest version of SQL is more efficient and fast. It can handle a huge amount of information.
The examination has been reduced. Automatic scheduling of batch jobs and processes are common today. Notification and Reporting Services is integrated with a number of database servers like MS SQL Server 2008. Together with the SQL statements, the database also includes scripting code that can handle data transfer between the source and target different databases and servers. Therefore, SQL has a key role in almost every stage of processing.
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Microsoft T sql Coding Standards
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Querying Table Data Using Visual Basic Code in Ms Access
In order to fully utilize the capabilities of MS Access, one must learn not only learn the Visual Basic (VB) programming language, but should also learn Standard Query Language (SQL). Once a grasp of these two languages have been obtained, MS Access users can begin to build faster and more efficient databases.
One tool that has proved itself very useful to me over the years is querying data from tables or queries using VB and SQL code. A brief introduction to this process is presented in this article. To best understand this process, an example is provided below along with an explanation of its parts.
‘*********CODE***********
Dim rstTemp As Recordset
Dim strSQL As String
Dim routeNum As Integer
strSQL = "SELECT [Route], [Main Route PM], [Intersecting Route], [IntBeginPM], [IntEndPM] “
strSQL = strSQL + “FROM Intersections_list WHERE (((CStr([Route])) = """ + cmbRouteQuery + """));"
Set rstTemp = CurrentDb.OpenRecordset(strSQL, dbOpenDynaset)
If (Not (rstTemp.EOF)) Then
rstTemp.MoveFirst
routeNum = rstTemp(0)
‘************************
After the initial variable declarations, the code assigns an SQL statement to the string variable strSQL. This statement directs Access to gather all the data in the Route, Main Route PM, Intersecting Route, IntBeginPM, and IntEndPM fields of the table named Intersections_list. Furthermore, it directs Access to only gather information from these fields where the Route field is equal to a value held in the combo box cmbRouteQuery.
Once the SQL statement has been set, it is passed to the next line of code which executes it. It should be noted that the dbOpenDynaset variable is built into Access and holds an integer value that changes the type of recordset to open. For most general purposes, using dbOpenDynaset will work just fine.
The “if statement” in the code example verifies that the recordset just created contains information. If information is present, the code directs Access to move to the first record in the recordset. The code then stores the route in the first record (routeNum = rstTemp(0)) in the variable routeNum to be used for later use.
About the Author
Nicholas Brown is a recognized authority on the subject of Access Databases. He is the founder of Database Technology Services (DTS). DTS is a leader in custom Access database development. DTS programmers create databases for corporations, small businesses and individuals. Visit www.dts-consultants.com to see all of the services DTS has to offer.
Microsoft T sql Coding Standards
