However, about fifteen years ago, as data interchange started to become a reality with the emergence of XML (and later JSON) what became apparent was that no two databases (and very few programs) were really any good at coming up with the same definitions for things, at least in terms of how the information was structured. So long as data remained within its respective databases, this intimate relationship between programmers and metadata wasn't that important to the average business user. With relational databases, this metadata is practically invisible because it is so intimately connected with the mechanics of that database storage, and in general, while you need to know tables column names (mostly) to perform queries, such metadata is typically hidden beneath the facade of a user interface where only the programmer actually knows the deepest layers of metadata. These are all forms of metadata. They tell the database how the information is structured. More importantly, this is data that describes some aspect of the data, of the individual cells in each row of a given table. It is usually set up by a database administrator or by a programmer, and consists of column (or field) names, a handful of distinct structural simple types (strings, integers, floating point numbers, currencies, dates, and so forth), some cardinality information (whether a property describes a required, optional, one-to-many or zero-to-many association) and typically a primary or foreign key relationship to other tables. This is partially due to the fact that in a typical relational database, the metadata about any given table is both largely structural and occupies a very tiny proportion of what is actually stored in the database. As indicated, some are trialware and provide functionality during a trial period some are freemium, meaning that they have freeware editions.What is less well understand by managers, data analysts or technologists is the value of metadata. These programs only provide full functionality with a payment. This is a comparison of commercial software in the field of file synchronization. Sync folders, browse devices from website, remote access was Microsoft FolderShare, 20,000 file limit Windows Live Sync (discontinued 31 March 2011) No, syncs whenever it's online and not paused Sync local folders via OmniSync or WebDAV server but not to the server itself OSX, OmniGroup software for iOS, open source framework available Windows (Vista and greater), Windows Mobile, OSX Windows Live Mesh (discontinued 13 February 2013) Microsoft SyncToy (discontinued January 2021) Syncs files, data, services a framework, not a tool Syncs mobile devices successor to Microsoft ActiveSync Yes (previous versions moved to archive folder)ĭistributed peer-to-peer sync, working also offline in a LANīriefcase (part of Windows) (removed in Windows 10 build 14942 )īackup software with folder synchronization feature remote management Shadow Copy Windows, OS X, Linux, FreeBSD, Android, iOS This is a comparison of the freeware ( proprietary software release free of charge) file synchronization software. Windows, macOS, Linux, Android, BSD, Solarisĭistributed peer-to-peer sync with automatic NAT traversal. ĪGPLv3 (Server) + Apache License 2.0 (Client) Multiple comparison criteria (date, check-sum).Ĭlients: Linux, macOS, Windows, Android, iOS. Yes using-backup and a time-stamped-suffixĬlient & server operation. Capabilities include sync, cache, encrypt, compress and mount. Supports over 50 cloud, protocol and virtual backends including S3 buckets, Google Drive, Microsoft OneDrive, and other high latency file storage. Linux, Windows, macOS, FreeBSD, NetBSD, OpenBSD, Plan9, Solaris - Intel/AMD-64, Intel/AMD-32, ARM-32, ARM-64, MIPS-Big-Endian, MIPS-Little-Endian Ĭlients: Windows, macOS, Linux, FreeBSD, Android, iOS, Windows PhoneĬlients: Windows, macOS, Linux, FreeBSD, Android, iOS, BlackberryĪGPLv3 (Server Edition) / proprietary (Enterprise Edition) Older version had OpenCandy Adware/malware, but now funded by donations. Sym-links, filter, metadata, contents, auto-sync Synchronizes files, website, network apps This is a list of file synchronization software for which there are Wikipedia articles. ( September 2022) ( Learn how and when to remove this template message) Several templates and tools are available to assist in formatting, such as Reflinks ( documentation), reFill ( documentation) and Citation bot ( documentation). Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. This article uses bare URLs, which are uninformative and vulnerable to link rot.
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