The free database samples have been upgraded to a front-end/back-end database format, greatly enhancing the database's performance when used by multiple users in a home or business network environment. Where practical, we have simplified the user interface in the sample databases in order to make then much easier to learn and master. Most sample databases now sport additional reporting, greater multi-user functionality, and performance enhancements. Quite a few of the databases showcased here began life as standard Microsoft Access Database templates, but have been improved and, upgraded to make the sample database more practical and functional for business. These database samples and templates are fully functional, and available to be downloaded and used free for as long you find the database useful. To showcase some of the functionality you should expect from a Microsoft Access database, we have selected several business-related Access database samples that we provide free to the visitors of our website. If you wish to read the technical rationale, follow the Access Junkie's links on database design.Access Business Databases - Download Free Technically, the process of breaking your data down into related tables is called normalization. Since she used StudentID when entering grades in her previous form, Access links this code to the one in the new main form, and automatically displays all the subjects and grades for the student in the main form. She creates another form/subform, with the main form reading its data from the Students table, and the subform from the Grades table. The grades were entered by subject, but Margaret needs to view them by student. Now with the appropriate subject in the main form, and adds each StudentID and Grade in the subform. To help enter marks, she creates a form, using the " Form/Subform" wizard: " Subjects" is the source for the m ain form, and " Grades" is the source for the subform. Then at the end of term when the marks are ready, she can enter them in the Grades table using the appropriate StudentID from the Students table and SubjectID from the Subjects table. Next she enters all the subjects she teaches into the Subjects table, each with a SubjectID. Now she enters all the students in the Students table, with the unique StudentID for each. In Access 95 - 2003, Relationships is on the Tools menu (or the Edit menu in Access 1 -2.) "Grades" will be the "related table" in relationships with both the other tables. In Access 20, Relationships is on the Database Tools ribbon. Grade the mark this student achieved in this subject.Īfter creating the three tables, Margaret needs to create a link between them. SubjectID a code that ties this entry to a subject in the Subjects table The Grades table will then have just three fields: StudentID a code that ties this entry to a student in the Students table Notes comments or a brief description of what this subject covers. The Subjects table will have fields: SubjectID a unique code for each subject. Surname split Surname and First Name to make searches easier.Īddress split Street Address, Suburb, and Postcode for the same reason. Margaret calls this field StudentID, so the Students table contains fields: StudentID a unique code for each student. The Students table must have a unique code for each student, so the computer doesn't get confused about two students with the same names. The solution to her problem involves making three tables: one for students, one for subjects, and one for grades. This requires many additional fields - something like: Nameīut how many subjects must she allow for? How much space will this waste? How does she know which column to look in to find "History 104"? How can she average grades that could be in any old column? Whenever you see this repetition of fields, the data needs to be broken down into separate tables. To do all this in a single table, she could try making fields for: Nameīut this structure requires her to enter the student's name and address again for every new subject! Apart from the time required for entry, can you imagine what happens when a student changes address and Margaret has to locate and update all the previous entries? She tries a different structure with only one record for each student. It's probably easiest to follow with an example.Īs a school teacher, Margaret needs to track each student's name and home details, along with the subjects they have taken, and the grades achieved. Updated April 2010.ĭatabase beginners sometimes struggle with what tables are needed, and how to relate one table to another. Compatible with Microsoft Access 2007, 2010, 2013, 2016, 2019 Office Software for Small Business Company, Non Profit Organization, or Personal Use. Microsoft Access tips: Relationships between Tables Microsoft Access Tips for Casual Users Download 06+ Student Microsoft Access Templates and Access Database Examples.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |