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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 (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]] in order to celebrate the anniversaries , '''field-based graphics''', unlimited number of CPC (40 years!) Relational Keys and CP/MOn Board help. It also includes '''On File Register''', a RAM-80 (50 years!)disk based register book. The latter provides capacity for a few thousands of single-field records. On File is 2025 requires RAM expansion to run and includes a business application similar resume option in order to access the MSDOSRAM-era PC applications and one of the most recent (2024) projects developed for disk contents upon restart. The original disk contains CP/Mplus boot sectors (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, quick and reliable. It uses thus all the entire CPC screen records are stored in the disk drive as stand-alone files. On the platform for the records; thus there is plenty of space to store large amount of data. In additionother hand, On File Register uses a wide variety of characters and symbols can be included single file to store the records in the RAM-disk. For large register books which contain more than 64 records, hence the database can contain data beyond the typical and traditional text type. Setting up a new database using On File 16 KB "cache" memory is very easy and can be performed implemented in three steps: 1) start the new file system by resetting the database order to be able to move back and forth while reading the master record, 2) frame/draw and edit the structure of the master record, 3) append new records in the database. The database is fully dynamicNotice, thus the user can modify that in the master record as well as any record anytime. Furthermore2025 version, in order to maximize the database can be either flat or relational. Children records include the ^ symbol followed by free directory entries and to overcome the relational key Compiler and one spaceEditor Overflow, for example ^Z80 . Parent records include a big part of the relational key On File source code (not the ^ symbolONFILE.COM) followed by one space, for example Z80 . Every record has its own unique filename, stored been '''encapsulated in the disk drivesource code''' of the Register Book (REGISTER. On File capacity is 200 records (equal to 400 KBCOM), it and is thus an ideal application for the 20 MB [[Dobbertin Harddisc]] which supports up to 512 file entries as well as [[ROMDOS]] or [[ParaDOS]] disks (128 x 2). Furthermore, On File can be also executed entirely from accessed upon user request via boolean expressions that are temporarily stored in the RAM Disk-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 come to fill? Let’s give an example. Using On File Register, a register book can be set up with, for the CP/M and the CPC6128: the 512 KB [[Dobbertin Memory Expansion]]example, the [[ParaDOS]] or [[X-DDOS]] ROMS for the external 5000 citizens of a town. The register book (800 ~210 KB) floppy drive, is saved in disk (disk 0) and is loaded once in the 20 MB [[Dobbertin Harddisc]], RAM of the [[Amstrad Serial Interface]]CPC6128. Then, the Amstrad Parallel [[Printer Port]]using On File Database, a full-screen record can be created for each citizen. The records of the [[CTM640/CTM644]] colour monitor, the [[AMX Mouse]], the [[MicroScript]] database are saved in 26 different disks (142 KBdisks A-Z or HD20), depending on the [[WordStar]] (706 KB)surname of each resident. Notice, that the [[Protext]] (406 KB), register book remains in RAM until the [[Multiplan]] (208 KB), end of the [[SuperCalc 2]] work regardless of which disk (240 KBA-Z/HD20)is used. Upon exit, the [[dBase II]] (272 KB), contents of the [[DR Draw]] RAM (235 KB)register book, the [[DR Graph]] (306 KBif modified), the [[MAXAM]] (206 are saved in disk 0. This can be achieved with an Amstrad CPC6128 with 512 KB)RAM expansion, the [[Atlast Plus]] (224 a 800 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 RamDOS D20 disks or HD20.  Using the RAM expansion following two links you can download On FIle (2024) and the 20 MB hard disk. The original disk contains some demo master records On File (*.002 files2025), some demo records as well as the boot sectors for CP/M 2respectively.2 (v1.2)