ANSWERS: 3
  • The question is too vague to be answered accurately.
  • errr... a databasey kind of database? Seriously I am a DBA and I wouldn't know how to begin to answer that question lol! It doesn't make sense...
  • a relational database 1) "Three key terms are used extensively in relational database models: relations, attributes, and domains. A relation is a table with columns and rows. The named columns of the relation are called attributes, and the domain is the set of values the attributes are allowed to take. The basic data structure of the relational model is the table, where information about a particular entity (say, an employee) is represented in columns and rows (also called tuples). Thus, the "relation" in "relational database" refers to the various tables in the database; a relation is a set of tuples. The columns enumerate the various attributes of the entity (the employee's name, address or phone number, for example), and a row is an actual instance of the entity (a specific employee) that is represented by the relation. As a result, each tuple of the employee table represents various attributes of a single employee." "A relational database contains multiple tables, each similar to the one in the "flat" database model. One of the strengths of the relational model is that, in principle, any value occurring in two different records (belonging to the same table or to different tables), implies a relationship among those two records." 2) here an overview over the different database models that were developed: "2 Database models 2.1 Flat model 2.2 Hierarchical model 2.3 Network model 2.4 Relational model 2.4.1 Relational operations 2.4.2 Normal forms 2.5 Object database models 2.6 Post-relational database models 2.7 Fuzzy databases " Source and further information: http://en.wikipedia.org/wiki/Database Further information: http://en.wikipedia.org/wiki/Database_models

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