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In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism. By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details. This isolation supports the single responsibility principle.
In 2016, a specific DAO, "The DAO", set a record for the largest crowdfunding campaign to date. [22] [23] Researchers pointed out multiple problems with The DAO's code. The DAO's operational procedure allowed investors to withdraw at will any money that had not yet been committed to a project; the funds could thus deplete quickly. [4]
The DAO was a digital decentralized autonomous organization [5] and a form of investor-directed venture capital fund. [6] After launching in April 2016 via a token sale, it became one of the largest crowdfunding campaigns in history, [6] but it ceased activity after much of its funds were taken in a hack in June 2016.
This is a list of well-known data structures. For a wider list of terms, see list of terms relating to algorithms and data structures. For a comparison of running times for a subset of this list see comparison of data structures.
These easy breakfast recipes feature ingredients like green tea, pineapple, spinach and yogurt to help support healthy digestion and combat bloating.
Class diagram showing generalization between the superclass Person and the two subclasses Student and Professor. The generalization relationship—also known as the inheritance or "is a" relationship—captures the idea of one class, the so-called subclass, being a specialized form of the other (the superclass, super type, or base class). Where ...
A man who tortured a man for two days before he jumped to his death from a 12th-storey flat has been jailed for eight years. Lee Smith, 37, abducted Jamie Forbes, also 37, and held him against his ...
This is a list of notable programming languages with features designed for object-oriented programming (OOP). The listed languages are designed with varying degrees of OOP support. Some are highly focused in OOP while others support multiple paradigms including OOP.