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Unique Identifiers
A unique identifier (UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. The concept was formalized early in the development of computer science and information systems. In general, it was associated with an primitive data type, atomic data type. In relational databases, certain attributes of an entity–relationship model, entity that serve as unique identifiers are called ''primary keys''. In mathematics, set theory uses the concept of ''element (mathematics), element indexed family, indices'' as unique identifiers. Classification There are some main types of unique identifiers, each corresponding to a different generation strategy: # serial numbers, assigned incrementally or sequentially, by a central authority or accepted reference. # random numbers, selected from a number space much larger than the maximum (or expected) number of objects to be identified. Although not really unique, some identifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UID (other)
UID may refer to: Identifying numbers * Unique identifier and instances or systems thereof In computing * Unique identifier for a specific User (computing), user of a computer system * ''Unique ID'' for the Mifare series of chips (integrated circuits) used in contactless smart cards and proximity cards. * ''Unique ID'' of a message in a folder on an IMAP server * User identifier (Unix), a code identifying each user on a Unix and Unix-like systems * Globally unique identifier (GUID) * Universally unique identifier (UUID) In other areas * PubMed 'Unique Identifier' parameter (PMID) designating specific scientific publication abstracts (PubMed#PubMed identifier, PubMed § PubMed identifier) * 'Unique Item Identifier', a specific value in the IUID (Item Unique Identification) system used by the United States Department of Defense for the identification of accountable equipment according to DoD Instruction 5000.64 * Aadhaar number, originally the Unique Identification Number, an init ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Legal Entity Identifier
The Legal Entity Identifier (LEI) is a unique global identifier for legal entities participating in financial transactions. Also known as an LEI code or LEI number, its purpose is to help identify legal entities on a globally accessible database. Legal entities are organizations such as companies or government entities that participate in financial transactions. An individual person may not obtain an LEI. The identifier is used in regulatory reporting to financial regulators and all financial companies and funds are required to have an LEI. The identifier is formatted as a 20-character, alpha-numeric code based on the ISO 17442 "Financial services — Legal entity identifier (LEI)" standard developed by the International Organization for Standardization (ISO). It connects to key information that enables clear and unique identification of legal entities participating in financial transactions. Each LEI database entry contains information about an entity's ownership and thus answers t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permanent Resident
Permanent residency is a person's legal resident status in a country or territory of which such person is not a citizen but where they have the right to reside on a permanent basis. This is usually for a permanent period; a person with such legal status is known as a permanent resident. Permanent residency itself is distinct from right of abode, which waives immigration control for such persons. Persons having permanent residency still require immigration control if they do not have right of abode. However, a right of abode automatically grants people permanent residency. This status also gives work permit in most cases. In many Western countries, the status of permanent resident confers a right of abode upon the holder despite not being a citizen of the particular country. Nations with permanent residency systems Not every nation allows permanent residency. Rights and application may vary widely. All European Union countries have a facility for someone to become a perma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citizen
Citizenship is a membership and allegiance to a sovereign state. Though citizenship is often conflated with nationality in today's English-speaking world, international law does not usually use the term ''citizenship'' to refer to nationality; these two notions are conceptually different dimensions of collective membership. Generally citizenships have no expiration and allow persons to work, reside and vote in the polity, as well as identify with the polity, possibly acquiring a passport. Though through discriminatory laws, like disfranchisement and outright apartheid, citizens have been made second-class citizens. Historically, populations of states were mostly subjects, while citizenship was a particular status which originated in the rights of urban populations, like the rights of the male public of cities and republics, particularly ancient city-states, giving rise to a civitas and the social class of the burgher or bourgeoisie. Since then states have expan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Government
A government is the system or group of people governing an organized community, generally a State (polity), state. In the case of its broad associative definition, government normally consists of legislature, executive (government), executive, and judiciary. Government is a means by which organizational policies are enforced, as well as a mechanism for determining policy. In many countries, the government has a kind of constitution, a statement of its governing principles and philosophy. While all types of organizations have governance, the term ''government'' is often used more specifically to refer to the approximately 200 list of sovereign states, independent national governments and government agency, subsidiary organizations. The main types of modern political systems recognized are democracy, democracies, totalitarian regimes, and, sitting between these two, authoritarianism, authoritarian regimes with a variety of hybrid regimes. Modern classification systems also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track And Trace
In the distribution and logistics of many types of products, track and trace or tracking and tracing concerns a process of determining the current and past locations (and other information) of a unique item or property. Mass serialization is the process that manufacturers go through to assign and mark each of their products with a unique identifier such as an Electronic Product Code (EPC) for track and trace purposes. The marking or "tagging" of products is usually completed within the manufacturing process through the use of various combinations of human readable or machine readable technologies such as DataMatrix barcodes or RFID. The track and trace concept can be supported by means of reckoning and reporting of the position of vehicles and containers with the property of concern, stored, for example, in a real-time database. This approach leaves the task to compose a coherent depiction of the subsequent status reports. Another approach is to report the arrival or depart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stock Keeping Unit
In inventory management, a stock keeping unit (abbreviated as SKU, pronounced or ) is the unit of measure in which the stocks of a material are managed. It is a distinct type of item for sale, purchase, or tracking in inventory, such as a product or service, and all attributes associated with the item type that distinguish it from other item types (for a product, these attributes can include manufacturer, description, material, size, color, packaging, and warranty terms). When a business records the inventory of its stock, it counts the quantity it has of each unit, or SKU. SKU can also refer to a unique identifier or code, sometimes represented via a barcode for scanning and tracking, which refers to the particular stock keeping unit. These identifiers are not regulated or standardized. When a company receives items from a vendor, it has a choice of maintaining the vendor's SKU or creating its own. This makes them distinct from Global Trade Item Number (GTIN), which are stan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Call Sign
In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally assigned by a government agency, informally adopted by individuals or organizations, or even cryptographically encoded to disguise a station's identity. The use of call signs as unique identifiers dates to the landline railroad telegraph system. Because there was only one telegraph line linking all railroad stations, there needed to be a way to address each one when sending a telegram. In order to save time, two-letter identifiers were adopted for this purpose. This pattern continued in radiotelegraph operation; radio companies initially assigned two-letter identifiers to coastal stations and stations on board ships at sea. These were not globally unique, so a one-letter company identifier (for instance, 'M' and two letters as a Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Part Number
A part number (often abbreviated PN, P/N, part no., or part #) is an identifier of a particular part design or material used in a particular industry. Its purpose is to simplify reference that item. A part number unambiguously identifies a part design within a single corporation, sometimes across several corporations. For example, when specifying a screw, it is easier to refer to "HSC0424PP" than saying "Hardware, screw, machine, 4-40, 3/4" long, pan head, Phillips". In this example, "HSC0424PP" is the part number. It may be prefixed in database fields as "PN HSC0424PP" or "P/N HSC0424PP". The "Part Number" term is often used loosely to refer to items or components (assemblies or parts), and it's equivalent to "Item Number", and overlaps with other terms like SKU (Stock Keeping Unit). The part design versus instantiations of it As a part number is an identifier of a part ''design'' (independent of its instantiations), a serial number is a unique identifier of ''a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Standard Identification Number
An Amazon Standard Identification Number (ASIN) is a 10-character alphanumeric unique identifier assigned by Amazon.com and its partners for product identification within the Amazon organization. They were designed in 1996 by Rebecca Allen, an Amazon software engineer, when it became clear that Amazon was going to sell products other than just books. The 10-character format of the ASIN was adopted so that Amazon databases and software, which were designed to expect a 10-character International Standard Book Number (ISBN) field, would not have to be changed to accommodate the new identification format. Usage and structure Each product on Amazon.com is given a unique ASIN. For books with a 10-digit International Standard Book Number The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique. Publishers purchase or receive ISBNs from an affiliate of the International ISBN Agency. A different ISBN is assigned to e ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Identification Number
A national identification number or national identity number is used by the governments of many countries as a means of uniquely identifying their citizens or residents for the purposes of work, taxation, government benefits, health care, banking and other governmentally-related functions. They allow authorities to use a unique identifier which can be linked to a database, reducing the risk of misidentification of a person. They are often stated on national identity documents of citizens. The ways in which such a system is implemented vary among countries, but in most cases citizens are issued an identification number upon reaching legal age, or when they are born. Non-citizens may be issued such numbers when they enter the country, or when granted a temporary or permanent residence permit. Such numbers may also locally referred to as a national insurance number, social security number, tax identification number, JMBG/EMBG or by their local name. Some countries issued such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Standard Book Number
The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique. Publishers purchase or receive ISBNs from an affiliate of the International ISBN Agency. A different ISBN is assigned to each separate edition and variation of a publication, but not to a simple reprinting of an existing item. For example, an e-book, a paperback and a hardcover edition of the same book must each have a different ISBN, but an unchanged reprint of the hardcover edition keeps the same ISBN. The ISBN is ten digits long if assigned before 2007, and thirteen digits long if assigned on or after 1 January 2007. The method of assigning an ISBN is nation-specific and varies between countries, often depending on how large the publishing industry is within a country. The first version of the ISBN identification format was devised in 1967, based upon the 9-digit Standard Book Numbering (SBN) created in 1966. The 10-digit ISBN format was developed by the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
