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Before distributing the universe to the users, it is good to have a quality assurance session to review the universe Table 16-3 provides a checklist that covers recommendations from the previous chapters A spreadsheet version of this is available via various web sites (Publisher, BOB, and my consulting partners) A review session is different from an integrity check; the integrity check ensures that the universe is technically correct but does nothing to ensure that the universe follows best practices or will be successful with the users The following people should ideally be involved in a quality assurance review: DBA The DBA will help verify the correctness of certain SQL statements, assess their impact on response time if there are advanced SQL functions, consider join strategies to generate the fastest queries possible, and identify opportunities to create aggregate tables and to tune indexes for popular condition objects Data modeler/architect The data modeler or architect will help identify any possible problems with joins that arise from missing data for example, if a particular field is not required This person can also review business terminology, object descriptions, customized lists of values, use of derived tables and aliases (CUSTOMER versus CUSTOMER_SHIP_TO versus CUSTOMER_SOLD_TO) A source system expert may also be helpful in this role Power user/report authors Power users and report authors will provide input on the overall appearance, organization, and functionality of the universe Did you, as the designer, actually deliver what they hoped for Will they be able to build the reports they need to build using the current design of the universe Power users will also provide input on similar items to the data modeler Other designers If your company has multiple universe designers, it s useful to get an objective opinion from another designer on the universe This is an excellent way to share tips and techniques and to provide a consistent user interface across universes (as an alternative to linked universes) As companies increasingly deploy business intelligence as an enterprise solution, some have developed competency centers or centers of BI excellence These competency centers would maintain and add to the quality assurance checklist to ensure best practices are documented and adhered to With the competency center, individual business units may have their own universe designers but the competency center facilitates a quality assurance review to provide an additional level of expertise and quality control Alternatively, designers may be staffed within the competency center, but the design review process ensures that all universe designers are adhering to best practices.

class that provides the implementation Second, it is possible for a class to implement two interfaces, both of which declare methods by the same name and type signature Qualifying the names with their interfaces removes the ambiguity from this situation Let s look at an example of each The following program contains an interface called IEven, which defines two methods, IsEven( ) and IsOdd( ), which determine if a number is even or odd MyClass then implements IEven When it does so, it implements IsOdd( ) explicitly

// Explicitly implement an interface member using System; interface IEven { bool IsOdd(int x); bool IsEven(int x); } class MyClass : IEven { // Explicit implementation Notice that this member is private // by default bool IEvenIsOdd(int x) { if((x%2) != 0) return true; else return false; } // Normal implementation public bool IsEven(int x) { IEven o = this; // Interface reference to the invoking object return !oIsOdd(x); } } class Demo { static void Main() { MyClass ob = new MyClass(); bool result; result = obIsEven(4); if(result) ConsoleWriteLine("4 is even"); // result = obIsOdd(4); // Error, IsOdd not exposed // But, this is OK It creates an IEven reference to a MyClass object // and then calls IsOdd() through that reference IEven iRef = (IEven) ob; result = iRefIsOdd(3); if(result) ConsoleWriteLine("3 is odd"); } }

types Be sure to Parse the object When a user now constructs a query that uses the Balance object, BusinessObjects XI will always prompt them to Select the Day for the Ending Balance The following example illustrates how prompts can become user unfriendly In the following query, the user wants to see daily account balances and correctly includes the Day object as a result object:

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12:

Here is a program that illustrates this conversion operator:

Part II: