Application FileDialog and VBA Access
What is Data Access
Data access is the on-demand, authorized ability to retrieve, modify, copy, or move data from IT systems. With data access, users can perform these functions in any location and with data in motion or at rest. Specifically, data at rest is stored on disks or hard drives in a database, data warehouse, or modern cloud repository. Data access is the means by which users can get to this data and its location, in an authenticated manner approved by the organization in possession of the data.
Data access is one of the main outputs of effective data governance programs. Organizations should ideally have well thought out, structured means of granting data access to different users. This is reinforced by various permissions and levels of security required for data access. Frequently, these permissions are based on organizational roles or responsibilities, which are structured according to data governance policies.
Sequential access uses a seek operation to move the different data on a disk until the requested data is found. However, each data segment is read (in sequential order) until the sought after data is found, which can tax computational resources. Still, this method is often faster than random access because it requires fewer seek procedures than random access does.
Returns a Filedialog Object that represents a single instance of a file dialog box Read-Only
Random access stores or retrieves data from anywhere on the disk. The advantage of this approach is that not all data has to be read in sequential order to find what a user’s looking for. Also, the data is located in constant time, which means there’s an upper limit to how long it will take for it to be retrieved. When that limit is less than how long it could take to sequentially read and retrieve data, random access is preferable.
Why is data access necessary?
There are several advantages to understanding, ensuring, and securing data access for common repositories like data warehouses. These benefits extend to everyone across the organization. Perhaps the chief benefit to organizations is regulatory compliance. Standards like GDPR and others have stiff penalties (and legal consequences) for non-compliance that organizations can avoid by having secure data access. Additionally, secure data access prevents data breaches, which are extremely costly and damage professional reputations.
Other benefits of secure data access reinforce the long-term value that data provides an organization. By clarifying who has access to what data and how, organizations can ensure data integrity — enabling the reuse of data for multiple use cases. Doing so expands the value that data provides across business units, in some cases. Lastly, secure data access lets organizations maintain their data over time with good data lineage — a process which lets users know exactly what was done to data and when. This information all aids in auditing, complying with regulations, and identifying future uses of data.
The FileDialog object allows you to display the File dialog box used by Access and to determine what files the user selected. The SelectedItems ... This example requires a reference to the Microsoft Office 12.0 Object Library
| Name | Required /Optional | Data Type | Description |
|---|---|---|---|
| Dialog Type | Required | msofiledialogtype | As msofileDialogType that represents the type of dialog |
Example
Private Sub cmdOpenPDF_Click()
Dim diag As FileDialog
Dim item As Variant
Set diag = Application.FileDialog(msoFileDialogFilePicker)
With diag
.Filters.Add "PDFs", "*.pdf"
.Filters.Add "Text File", "*.txt"
.Filters.Add "All File", "*.*"
.FilterIndex = 3
If diag.Show Then
For Each item In diag.SelectedItems
MsgBox item
Next
End If
End With
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