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[[Image:On_File_Main_Menu.jpg|right|thumb|250px|On File (2024) main menu]][[Image:On_File_typical_record.jpg|right|thumb|250px|On File typical (2024) fuel consumption record]][[Image:On_File_Car_Maintenance_Record.jpg|right|thumb|250px|On File (2024) car maintenance record]][[Image:OnFile_2025_Main_Menu.jpg|right|thumb|250px|On File (2025) main menu (containing 200 records, 1640 registrations)]][[Image:OnFile_2025_CPC6128_Record.jpg|right|thumb|250px|On File (2025) CPC6128 record which also includes field-based graphics]]

'''On File(2025)''' Database Management System for '''CP/M plus''' was released in June 2025. In addition to the 2024 by version, it includes the options to Group and to Invert the records, to Index the database, to perform Index based search and to perform field based calculations. It also supports [[KSLGSX]] , '''field-based graphics''', unlimited number of Relational Keys and On Board help. It also includes '''On File Register''', a RAM-disk based register book. The latter provides capacity for a few thousands of single-field records. On File 2025 requires RAM expansion to run and includes a resume option in order to celebrate access the anniversaries of CPC (40 years!) and RAM-disk contents upon restart. The original disk contains CP/M-80 plus boot sectors (50 years!Dobbertin v1.1x), a database of old computers and a register book for the period 1970-1989. On File database (2024/2025) is disk-based, thus all the records are stored in the disk drive as stand-alone files. On the other hand, On File Register uses a business application similar single file to store the MSDOSrecords in the RAM-era PC applications disk. For large register books which contain more than 64 records, a 16 KB "cache" memory is implemented in order to be able to move back and one forth while reading the records. Notice, that in the 2025 version, in order to maximize the free directory entries and to overcome the Compiler and Editor Overflow, a big part of the most recent On File source code (2024ONFILE.COM) projects developed for CP/Mhas been '''encapsulated in the source code''' of the Register Book (REGISTER.COM) and is accessed upon user request via boolean expressions that are temporarily stored in the RAM-disk. <br>

As per [[Cosmos]], What gap of the 80's does On File has been developed on the basis of the hardware peripherals as well as the software that were (contemporary2025) available for the CP/M and the CPC6128: the 512 KB [[Dobbertin Memory Expansion]]come to fill? Let’s give a “professional” example. Using On File Register, the [[ParaDOS]] or [[X-DDOS]] ROMS for the external (800 KB) floppy drivea register book of earthquakes that are realized in a specific country can be set up, the 20 MB [[Dobbertin Harddisc]], the [[Amstrad including Serial Interface]]Number, the Amstrad Parallel [[Printer Port]]Date, the [[CTM640/CTM644]] colour monitorTime, the [[AMX Mouse]]Location, the [[MicroScript]] (142 KB)Duration, the [[WordStar]] (706 KB)Depth and Magnitude. Then using On File Database, detailed records of the [[Protext]] (406 KB), earthquakes that where stronger than e.g. 5 Richter can be set up including the [[Multiplan]] (208 map of their location. This can be achieved with an Amstrad CPC6128 with 512 KB)RAM expansion, the [[SuperCalc 2]] (240 a 800 KB), the [[dBase II]] (272 KB), the [[DR Draw]] (235 KB), the [[DR Graph]] (306 KB), the [[MAXAM]] (206 KB), the [[Atlast Plus]] (224 KB) and other [[Programming software]]. On File includes a graphics screen saverexternal floppy drive, is based on the [[Dobbertin]] specific version of CP/M 2.2 plus (v1.21x) which provides 59 KB TPA, supports the RAM expansion and the 20 MB hard diskRamDOS D20 disks or HD20. <br>

Using the following two links you can download On File database is disk-based, quick and reliable. It uses the CPC screen FIle (80x252024) as a single record; thus there is plenty of space to edit many different fields and store large amount of data. Setting up a new database using On File is very easy: 1) start the new file system by resetting the database and the master record, 2) frame and/or draw the master record, 3) edit the fields and the structure of the master record, 4) append the records in the database on the basis of the master record. Every record has its own unique filename, stored in the disk drive. On File capacity is 200 records (equal to 400 KB2025), it is thus ideal for the 20 MB [[Dobbertin Harddisc]] which supports up to 512 file entriesrespectively.

The database can be either flat or relational== Download ==* [http://www. Children records include the ^ symbol followed by the relational key and one space, for example ^Z80 cpcwiki. The relational key can contain up to 15 symbols (Aeu/index.php/File:On_File_2024_Boot_Disk.Z, a..z, 1..0,+,?, etc.). Parent records include the relational key (not the ^ symbol) followed by one space, for example Z80 . If a record contains more than one relational key, the key at the lowest field is set as the active key. dsk Download from CPCWiki] [[Category:Applications]] [[Category:CP/M]]

* [http://www.cpcwiki.eu/index.php/File:On_File_2024_Boot_DiskOn_File_2025_Boot_Disk.dsk Download from CPCWiki]

[[Category:Applications]] [[Category:CP/M]]