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Access Chapter 5-Table Tricks, Advanced Queries and Custom Forms
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PgP MIS 342 Access5-2 Lookup Tables Use to limit user input into a table Data validation Data integrity Wizard shields you from relationship complexity, Key columns “Lookup table” must have a defined relationship with the main table Can use SQL statement as data source
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PgP MIS 342 Access5-3 Lookup Tables Examine Wizard results by viewing ‘field properties’ on the Lookup tab
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PgP MIS 342 Access5-4 Northwind.mdb Orders Table Properties Examine the properties
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PgP MIS 342 Access5-5 Table Input Masks Enforces predefined format Study input mask characters Experiment with the Wizard
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PgP MIS 342 Access5-6 Table Input Masks Note literal display characters can be stored in database. You may not think this is necessary, but it is wise to store the characters if you plan on exporting the table to a text or other external file. Consider when interfacing with other systems. XML, EDI, other databases
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PgP MIS 342 Access5-7 Table Input Mask Exercise Using blank Access database file, Create new table, with two fields PhoneNumberWithMaskCharacters PhoneNumberWithoutMaskCharacters Use Input Mask Wizard to setup fields Enter data into both fields of a record Export table to Excel file Examine results
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PgP MIS 342 Access5-8 Table Input Mask Exercise PhoneNumberWithMaskCharacters !\(999") "000\-0000;0;_ PhoneNumberWithoutMaskCharacters !\(999") "000\-0000;;_ Sections separated by ‘;’ What does each section mean?
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PgP MIS 342 Access5-9 Table Input Mask Exercise Section 1-The Mask 19 possible characters, search Help for InputMask Property Section 2-Store which characters? 0- store all characters 1 or blank- store only typed characters Section 3- Placeholder character
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PgP MIS 342 Access5-10 Query-Pattern Match Query criteria, Like combined with wildcard characters-*,?,#
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PgP MIS 342 Access5-11 Parameter Query Specify criteria at run time Access provides the Prompt box,… End user supplies the parameter Offers a degree of flexibility But-user needs to know value to enter!
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PgP MIS 342 Access5-12 Custom Forms Start from scratch, Modify existing form or… Begin with the Form Wizard and modify the results… Modifications are done in Design View
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PgP MIS 342 Access5-13 Custom Forms-Items Needed Learn the available objects Text Box, Command Buttons… Refer to the Field List Realize different objects have different properties Learn how to select, move and position controls
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PgP MIS 342 Access5-14 Custom Forms-Labels vs Text Box Label- displays static text Text Box- the most basic “data bound” control. Used to display data from tables, queries, calculated fields or expressions
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PgP MIS 342 Access5-15 Custom Forms-Tabs Efficient use of space Requires good logical grouping of fields to be effective The more familiar you are with positioning, resizing and aligning of controls, the easier this will be
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PgP MIS 342 Access5-16 Form Filtering Use to target certain field values Filters that you use often can be saved as a query Can also apply queries as filters Filter by Form Apply query as filter
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