By Jacob Hammer Pedersen, Syed Fahad Gilani, Jon Reid, Visit Amazon's James Huddleston Page, search results, Learn about Author Central, James Huddleston, , Ranga Raghuram
Beginning C# 2005 Databases: From amateur to Professional teaches you every thing you want to learn about relational databases, the SQL database language, and ADO.NET 2.0. You’ll additionally get a valid commence in constructing console, home windows kinds, ASP.NET, or even XML database applications.
This ebook additionally teaches you database fundamentals and the way to take advantage of SQL to speak with databases. You’ll get specified and code-practical strategies to entry info in C# throughout a variety of particular coding events. absolutely revised and upgraded for .NET 2.0, this ebook provides you with the simplest modern perform during this middle programming quarter, and you’ll end up utilizing it in the majority of your .NET tasks. This publication systematically:
- Provides step by step directions on fitting and configuring visible C# and SQL Server show versions
- Presents all crucial SQL question and replace techniques and syntax, so that you dont desire past familiarity with relational databases or SQL
- Describes find out how to use ADO.NET transactions, exceptions, and occasions
- Covers ADO.NET gains for dealing with XML, textual content, and binary info
- Explains all recommendations via basic code examples
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Qxd:WroxBeg 9/12/06 10:31 PM Page 19 Database Fundamentals statement, for example. SQL statements are often made up of several parts, which are known as clauses. SQL statements may also contain embedded (nested) statements known as subqueries. SQL statements are executed, and may return one or more results. ” In some SQL dialects, a semicolon (;) is used to signify the end of a statement, although that is generally not required, because the context is enough to tell where one statement ends and the next begins.
ProductId columns are used to add data from the Product table to the result set, and an inner join is made between OrderProduct and Product. 3. Product is joined to ProductCategory as in the previous example. This results in a useful combination of data. The outcome gives you full order information — including what products make up an order, how many of each product are in the order, and what categories those products belong to. You come across inner joins frequently in this book, so there are plenty more examples to get your teeth into.
The other aspect of security in databases is authorizing different users to perform different tasks. In some cases, such as in SQL Server 2005, you can approach this in a granular way. You can, for example, assign a user the rights to view data in one table but not to edit that data. You can also restrict access to individual stored procedures and control access to all manner of more esoteric functionality. Users can also be authorized to perform tasks at the DBMS level if required — such as being able to create new databases or manage existing databases.