430 Part I EXAM PREPARATION FROM Product3 If
430 Part I EXAM PREPARATION FROM Product3 If you perform a SELECT against this view, you will find that it returns the entire resultset. This complete resultset is achieved by selecting against each individual table. FIGURE 7.16 Inserting sample data into the member tables. With the completion of this section, you should be able to explain what a partitioned view is and differentiate between local partitioned views and distributed partitioned views. You should also be aware that the UNION ALL operator is used to consolidate the different tables into a single view. Lastly, you should know that the table structure for each table used in the view must be identical. If you feel comfortable with this information, then move on to the next section, which covers application security through views and ownership chains. CONTROL DATA ACCESS BY USING VIEWS . Control data access by using views. So far, we ve looked at most of the aspects of views and data modifications. What we have not examined yet is security and permissions. The next section explains how to apply permissions through several layers of views, and ownership chains. Granting Permissions and Ownership Chains Views help you apply security to your database applications by how permissions are checked in your view and underlying tables. Views make it easy to control access to this data. Managing permission for views is similar to managing permissions for tables.
For high quality website hosting services please check cheap web hosting website.