As mentioned previously, tables, queries, forms, reports, macros, and modules amalgamate to compose an Admission database. Anniversary of these altar has a adapted function. The afterward sections booty you on a bout of the altar that achieve up an Admission database. The examples use the sample Northwind database to allegorize the use of anniversary object. If you appetite to chase along, you can actualize the Northwind database as covered in Affiliate 2, “Getting Started with Microsoft Access.” You can log in as any user, which will booty you to the Home form. Aing the Home anatomy to chase along.
Tables are the starting point for an application. Whether abstracts is stored in an Admission database or you advertence alien abstracts (such as abstracts in an Excel spreadsheet) by appliance affiliated tables, all the added altar in a database either anon or alongside advertence tables.
To appearance all the tables that are independent in an accessible database, you baddest Tables from the account of altar accessible in the database (see Amount 1.1). A account of accessible tables appears (see Amount 1.2).
Figure 1.1. To appearance the tables in a database, baddest Tables from the account of accessible objects.
Figure 1.2. You can appearance the tables independent in a database.
To appearance the abstracts in a table, double-click the name of the table you appetite to view. (You can additionally right-click the table and again baddest Open.) Admission displays the table’s abstracts in a datasheet that includes all the table’s fields and annal (see Amount 1.3). You can adapt abounding of the datasheet’s attributes and alike chase for and clarify abstracts from aural the datasheet; these techniques are covered after in this chapter.
Figure 1.3. A table’s datasheet contains fields and records.
If the table is accompanying to addition table (such as the Northwind database’s Barter and Orders tables), you can additionally aggrandize and collapse the subdatasheet to appearance abstracts stored in adolescent tables (see Amount 1.4).
Figure 1.4. Datasheet appearance of the Barter table in the Northwind database.
As an Admission user, you generally appetite to appearance the table’s design, which is the adapt or arrangement for the table. To appearance a table’s architecture (see Amount 1.5), right-click the table name in the Navigation Pane, and again baddest Architecture View. In Architecture view, you can appearance or adapt all the acreage names, abstracts types, and acreage and table properties. Admission gives you the ability and adaptability you charge to adapt the architecture of tables. Affiliate 3, “Tables: The Repository for Your Data,” and Affiliate 9, “Creating Your Own Tables,” awning these topics.
To appropriately advance data’s candor and affluence the activity to assignment with added altar in a database, you charge ascertain relationships amid the tables in a database. You achieve this by appliance the Relationships window. To appearance the Relationships window, baddest Relationships from the Database Accoutrement tab of the Ribbon. The Relationships window appears. In this window, you can appearance and advance the relationships in the database (see Amount 1.6). If you or a adolescent user or developer accept set up some relationships, but you don’t see any in the Relationships window, you can baddest All Relationships in the Relationships accumulation on the Architecture tab of the Ribbon to unhide any hidden tables and relationships.
Figure 1.6. The Relationships tab, area you appearance and advance the relationships in a database.
Many of the relationships in Amount 1.6 accept accompany curve amid tables and appearance a cardinal 1 on one ancillary of the accompany and an beyond attribute on the other. This indicates a one-to-many accord amid the tables. If you double-click a accompany line, the Adapt Relationships chat box opens (see Amount 1.7). In this chat box, you can specify the exact attributes of the accord amid tables. The accord amid the Barter and Orders tables in Amount 1.7, for example, is a one-to-many accord with referential candor enforced. This agency that the user cannot add orders for barter who don’t exist. Notice in Amount 1.7 that the Cascade Amend Accompanying Fields analysis box is not selected. This agency that if the user cannot amend the CustomerID field. Because Cascade Annul Accompanying Annal is not arrested in Amount 1.7, the user cannot annul from the Barter table barter who accept agnate orders in the Orders table.
Figure 1.7. The Adapt Relationships chat box, which enables you to specify the attributes of the relationships amid tables.
Chapter 10 abundantly covers the activity to ascertain and advance relationships. For now, you should authorize relationships both conceptually and absolutely as aboriginal in the architecture activity as possible. Relationships are basic to auspiciously architecture and apparatus your application.
Queries in Admission are able and multifaceted. A concern retrieves abstracts from your database based on belief you specify. An archetype is a concern that retrieves all advisers who alive in Florida. Baddest queries accredit you to view, summarize, and accomplish calculations on the abstracts in tables. Activity queries accredit you to add to, update, and annul table data. To run a query, aboriginal aing the Accord window if you still accept it open. Next baddest Queries from the Altar account and again double-click the concern you appetite to run. Or you can bang in the account of queries to baddest the concern you appetite to run and again right-click and baddest Open. When you run a Baddest query, a datasheet appears, absolute all the fields defined in the concern and all the annal affair the query’s belief (see Amount 1.8). When you run an Activity (Append, Update, Delete, or Achieve Table) query, Admission runs the defined action, such as authoritative a new table or appending abstracts to an absolute table. In general, you can amend the abstracts in a concern aftereffect because the aftereffect of a concern is absolutely a activating set of records, alleged a dynaset, based on the tables’ data. A dynaset is a subset of abstracts on which you can abject a anatomy or report.
Figure 1.8. The aftereffect of active the Artefact Orders query.
When you abundance a query, Admission food alone the query’s definition, layout, or formatting backdrop in the database. Admission offers an intuitive, convenient apparatus that helps you architecture queries: the Concern Architecture window (see Amount 1.9). To accessible this window, baddest Queries from the Altar account in the Navigation Pane, accept the concern you appetite to modify, right-click, and baddest Architecture View.
Figure 1.9. The architecture of a concern that selects abstracts from the Barter table.
The concern pictured in Amount 1.9 selects abstracts from the Barter table. It displays the Company, Job Title, Assignment Phone, Home Phone, and Mobile Phone from the Barter table. Affiliate 4, “Using Queries to Retrieve the Abstracts You Need,” Affiliate 11, “Enhancing the Queries That You Build,” and Affiliate 12, “Advanced Concern Techniques,” awning the activity of designing queries. Because queries are the foundation for best forms and reports, they are covered throughout this book as they administer to added altar in the database.
Although you can admission and adapt abstracts in a table’s Datasheet view, you can’t ascendancy the user’s accomplishments actual well, nor can you do abundant to facilitate the data-entry process. This is area forms appear in. Admission forms can accept abounding traits, and they’re adjustable and powerful.
To appearance a form, you baddest Forms from the Altar list. Again you double-click the anatomy you appetite to appearance or right-click in the account of forms to baddest the anatomy you appetite to appearance and again bang Open. Amount 1.10 illustrates a anatomy in Anatomy view. This Chump Details anatomy is absolutely two forms in one: one capital anatomy and one subform. The capital anatomy displays advice from the Barter table, and the subform displays advice from the Orders table (a table accompanying to the Barter table). As the user moves from chump to customer, the anatomy displays the orders associated with that customer. When the user clicks to baddest an order, the anatomy displays the absolute order.
Figure 1.10. The Chump Details form, which includes customer, order, and adjustment detail information.
Like tables and queries, you can additionally appearance forms in Architecture view. The Architecture appearance provides accoutrement you may use to adapt the blueprint of your form. To appearance the architecture of a form, you baddest Forms from the Altar list, accept the anatomy whose architecture you appetite to modify, and again right-click and baddest Architecture View. Amount 1.11 shows the Chump Details anatomy in Architecture view. Affiliate 5, “Using Forms to Affectation and Adapt Information,” Affiliate 13, “Building Able Forms,” and Affiliate 14, “Advanced Anatomy Techniques,” awning forms in added detail.
Forms accredit you to admission and adapt information, but with reports, you can affectation information, usually to a printer. Amount 1.12 shows a address in Examination mode. To examination any report, baddest Letters from the Altar list. Double-click the address you appetite to examination or right-click the address appetite to examination from the account of letters in the Navigation Pane, and again bang Open. Notice the address in Amount 1.12. It shows the Monthly Sales Address which outputs the sales by artefact for a month. If you attack to run this report, Admission endless the Sales Letters Chat form. Here you baddest how you appetite to appearance the sales, the sales period, and the year, quarter, or ages as appropriate. For the example, I alleged Sales by Product, Monthly Sales, 2006 for the year, and June for the month. Like forms, letters can be busy and exciting, and they can accommodate admired information.
As you may accept guessed, you can appearance letters in Architecture view, as apparent in Amount 1.13. To appearance the architecture of a report, baddest Letters from the Altar list, baddest the address you appetite to view, and again right-click and baddest Architecture View. Amount 1.13 illustrates a address with abounding sections; in the figure, which shows the Architecture appearance of the Invoice report, you can see the Page Header, Adjustment ID Header, Detail section, Adjustment ID Footer, and Page Footer (just a few of the abounding sections accessible on a report). Aloof as a anatomy can accommodate subforms, a address can accommodate subreports. Affiliate 7, “Using Letters to Print Information,” Affiliate 15, “Building Able Reports,” and Affiliate 16, “Advanced Address Techniques,” awning the activity of designing reports.
Macros in Admission aren’t like the macros in added Office products. You can’t almanac them, as you can in Microsoft Word or Excel, and Admission does not save them as Visual Basic for Applications (VBA) code. With Admission macros, you can accomplish best of the tasks that you can manually accomplish from the keyboard, Ribbon, and QuickAccess toolbar. Macros accredit you to body argumentation in to your appliance flow.
To run a macro, baddest Macros from the Altar list, and again double-click the macro you appetite to run. Or you can right-click the macro and bang Run. Admission again executes the accomplishments in the macro. To appearance a macro’s design, you baddest Macros from the Altar list, baddest the macro you appetite to modify, right-click, and baddest Architecture Appearance to accessible the Macro Architecture window (see Amount 1.14). The macro pictured in Amount 1.14 opens the anatomy alleged Startup Screen, and again opens the anatomy alleged Login Dialog. Affiliate 17, “Automating Your Database with Macros,” and Affiliate 18, “Advanced Macro Techniques,” awning the activity of architecture and alive with macros.
Figure 1.14. The architecture of a macro that opens two forms.
Modules, the foundation of any circuitous Admission application, accredit you to actualize libraries of functions that you can use throughout an application. You usually accommodate subroutines and functions in the modules that you build. A activity consistently allotment a value; a subroutine does not. By appliance cipher modules, you can do aloof about annihilation with an Admission application. Amount 1.15 shows an archetype of a bore alleged PurchaseOrders. You can double-click the bore in the Navigation Pane to admission the bore code. This will booty you to the Visual Basic Editor (VBE) area you can appearance and adapt the programming code. To acknowledgment to the Admission environment, bang the Appearance Microsoft Admission toolbar on, or use the Alt-F11 keystroke combination.
Figure 1.15. The PurchaseOrders bore in Architecture view, assuming the Accepted Declarations area and the Generate and Actualize functions.
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