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The following two solutions are wrong. Solution 4-8b. Wrong Solution 1 SQL> select distinct attendee 2 from registrations 3 where attendee not in (select attendee 4 from registrations 5 where course = 'JAV'); ATTENDEE -------7521 7844 7900 7902 7934 SQL> This result shows only five employees because employees 7369 and 7654 never attended any course; therefore, their employee numbers do not occur in the REGISTRATIONS table. Solution 4-8c. Wrong Solution 2 SQL> select distinct attendee attendee 2 from registrations 3 where course <> 'JAV'; ATTENDEE -------7499 7521 7566 7698 7788 7839 7844 7876 7900 7902 7934 11 rows selected. SQL> This result shows too many results, because it also shows employees who attended the Java course and at least one non-Java course; for example, employee 7566 attended the Java and the PL/SQL courses.

Refer to the documentation for Test::More, the book Perl Testing: A Developer s Notebook by Ian Langworth (O Reilly, 2005), 3 of this book, and the recipe titled Alternative to perl -d: Devel::REPL and CatalystX::REPL.

9a. Which employees have subordinates Solution 4-9a. Employees with Subordinates SQL> select empno, ename, init 2 from employees 3 where empno in (select mgr 4 from employees); EMPNO -------7566 7698 7782 7788 7839 7902 SQL> 9b. Which employees don t have subordinates Solution 4-9b. Employees Without Subordinates SQL> select empno, ename, init 2 from employees 3 where empno not in (select mgr 4 from employees 5 where mgr is not null); EMPNO -------7369 7499 7521 7654 7844 7876 7900 7934 SQL> ENAME -------SMITH ALLEN WARD MARTIN TURNER ADAMS JONES MILLER INIT ----N JAM TF P JJ AA R TJA ENAME -------JONES BLAKE CLARK SCOTT KING FORD INIT ----JM R AB SCJ CC MG

Figure 4-3. Fields that are created when creating a Concordance database from the Litigation Document Production template

Note The WHERE clause on the fifth line of Solution 4-9b is necessary for a correct result, assuming that null values in the MGR column always mean "not applicable." See also Solution 4-12..

It s easy to get sick of typing (or auto_completing) the following code all the time: script/myapp_server.pl script/myapp_server.pl -d CATALYST_DEBUG=0 script/myapp_server.pl and so on. If you re on a Unix system using the Bash shell, then you can add this to the .bash_ profile file in your home directory: alias alias alias alias cats='CATALYST_DEBUG=0 script/*server.pl' catsd='script/*server.pl -d' catsdd='CATALYST_DEBUG=0 perl -d script/*server.pl -d ' catsddd='CATALYST_DEBUG=1 perl -d script/*server.pl '

Concordance can import several different types of data. In the example covered in this section, import data is in a delimited format. A more extensive discussion of import techniques that apply to all types of compatible data formats appears in 6. The number of delimited fields in a load file should match the type and sequence of fields in the database to be loaded. If the type of data contained in the delimited fields doesn t match the data type of the fields to which they correspond, data will be corrupted. Preliminary analysis of data files is essential to ensuring that load files are clean. Reviewing data files might be as simple as opening the files in a text editor and scanning rows for egregious errors, or it might be as advanced as loading the data into a staging database first, then reviewing the results. To load a delimited data file into the EX01.DCB database created using the procedures described in the preceding section, use the Documents Import Delimited Text menu item. This opens the Import dialog box shown in Figure 4-4. You have the option to use a wizard to guide you through the load process. Here, a wizard refers to a series of helpful, interactive Windows dialogs that prompt a user for input. Concordance has many wizards that are designed to simplify otherwise involved administrative procedures.

10. Produce an overview of all general course offerings (course category GEN) in 1999. Solution 4-10. SQL> 2 3 4 5 6 7 select * from offerings where begindate between and and course in (select from where

Once you re in the application s root directory, you can then issue the command cats to run the server without debugging switched on (note the use of the CATALYST_DEBUG environment variable to override the possible presence of the -Debug flag in the application setup) or catsd to run with the server debug output switched on. The last two are for use with the Perl debugger. catsdd will run with the internal debugging output switched on. This is usually undesirable due to the large volume of output it can produce, so we also make an alias for running without the debug output: catsddd. Now running the development server is as simple as this: $ cats You can connect to your server at http://localhost:3000