XLSX files are created using the Open XML standard, which was introduced in Microsoft Office 2007. They are stored as a compressed Zip archive, which contains a collection of individualfiles. The archive includes the file [Content_Types].xml, which describes the spreadsheet, and an XML file for each worksheet within the spreadsheet.
NOTE: XLSX files can be opened in Excel 2007 or later(Anteriores: XLS). They are also backwards compatible with earlier versions of Excel via Open XML component support.
ACCDB: Database created with Microsoft Access 2007 or later; typically containsdata organized into tables and fields; may also include custom forms, SQL queries, and other data.
ACCDB files are similar to .MDB files used in previous versions of Access, but support additionalfunctionality. Some enhancements include the ability to store file attachments and other binary data, multi-valued field support, database encryption, and integration with MS Outlook and SharePoint.MDB: Database file created by Microsoft Access (2003 y anteriores), a widely-used desktop relational database program; contains the database structure (tables and fields) and database entries (tablerows) as well as data entry forms, queries, stored procedures, reports, and database security settings.
Access is included with some Microsoft Office software packages, but it is only available forWindows. MDB files may be imported by a variety of other progra
PPTX: Presentation file created by Microsoft PowerPoint, a program used to create slide show presentations; contains a collection of slides,including their text, images, formatting, animations, drawn objects, and other media; commonly used in business meetings, marketing applications, and academic classroom settings.
In contrast to .PPTfiles, which store all presentation data in a single binary file, PPTX files are created using the Open XML format, which stores documents as a collection of separate files in a compressed zip...