![]() ![]() Both are used to improve user experience and customer interactions. Options to enter or remove data from formsįorms and reports are key features of DBMS.Use the > to move these fields from the Available fields list to the Fields in report list: Date, Motel, Tolls, Miscellaneous, Breakfast, Lunch, Supper, and SnackCost (Figure 86).Select Table: Vacations in the Tables or Queries dropdown list.In the Tasks list, click Use Wizard to Create Report.Click the Reports icon in the Database list in the Automobile - window.Since fuel was purchased and entered into this table at times other than during the vacation, a query needs to be created that contains only the fuel purchased during the vacation. The second report involves the Fuel table. This report will not require an additional query. The fields we will need for the first report from the Vacations table are: Date, Motel, Toll, Breakfast, Lunch, Supper, SnackCost, and Miscellaneous. The second report will list the fuel costs each day. The first one will list the expenses each day other than fuel. In the near future, the report feature will include these abilities.įor our purposes, we will create two reports. (This would let us know where the money came from to pay the expenses.) At the present time, using the data from the queries in a spreadsheet is the best way to handle reports like this. A third possible report would list the totals for each expense group for each type of payment. Another possible report would list the expense totals for each day of the vacation. One possible report would simply list the totals of each of these expense groups. The expenses for our vacation are motel, tolls, miscellaneous, breakfast, lunch, supper, snacks, and fuel. Are there any calculations required in the data before being added to the report?.Will a query have to be created because these fields are in different tables?.What fields are required to provide this information?.How do we want the information arraigned?.What information do we want in the report?.Certain questions need to be asked before creating the report. We will create a report on vacation expenses. So this report requires creating a query. These values are contained in fields of two different tables: Vacations and Fuel. Fuel costs are one part of that report as are meal costs. Then you can create a report on this query.Īn example of this caution is creating a report on vacation expenses. If you want to use fields from different tables, you must first combine these fields in a single query. So you need first to decide what fields you want to use in the report. However, a report on the fuel data should probably be a dynamic report, because this report depends upon data that does change.Īll reports are based upon a single table or query. Dynamic reports can be updated to show the latest data.įor example, a report on vacation expenses divided into categories should probably be a static report because it is based upon specific data that does not change. Static reports contain the data in the selected fields at the time the report was created. ![]() They can contain all of the fields of the table or query or just a selected group of fields. Reports are generated from the database's tables or queries. Reports provide information found in the database in a useful way. It also requires having a copy of the Hsqldb User Guide available from This is how the and operator works on sets. That means that all of these criteria have to be met before a row of values will be created in the query. For example, we listed all of our criteria in one row. To fully use queries requires a knowledge of mathematics and specifically set operations ( unions, intersections, and, or, complements, and any combinations of these). We can include when each album was bought. The information we want is what albums are by a certain musical group or individual (the album's author). The Query Wizard window opens (Figure 66). In the main database window (Figure 2), click the Queries icon in the Databases section, then in the Tasks section, click Use Wizard to Create Query. Queries which require calculations are best created with the Design view. It is possible to obtain a single answer or multiple answers, depending upon the circumstances. Queries created by the wizard provide a list or lists of information based upon what one wants to know. Top of page Using the Wizard to create a query Query results, themselves, are special tables within the database. Since the query (one part of a database) does this, the data source appears to become one part of that database: its table or tables. However, searching for usable information from a data source requires a query. A database is only one type of data source. Queries blur the differences between a database and a data source. ![]()
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