The relational model is simply a representation of the database as a compilation of relations. A relation, on the other hand, stands for a table of values where each row contained in the table stands for a set of related data values. The rows in this table represent a relationship or a ...
Exploiting data distribution patterns in modeling tuple selectivities in a database. Information Sciences - Kamel, King - 1993Kamel, King, 1993] N. Kamel and R. King. Exploiting data distribution patterns in modeling tuple selectivities in a database. Information Sciences , 69(1-2), 1993....
npm install tuple-database Define your schema. For example a contacts app in SQL might be defined as: CREATE TABLE user ( id UUID PRIMARY KEY, first_name TEXT, last_name TEXT, age INT ) CREATE INDEX age ON user (age); CREATE INDEX name ON user (last_name, first_name); But for ...
Tuples are commonly used in four different ways: To represent a single set of data. For example, a tuple can represent a record in a database, and its components can represent that record's fields. To provide easy access to, and manipulation of, a data set. The following example defines...
ain the various entity sets can be re-evaluated automatically 正在翻译,请等待... [translate] aWhenever any tuple is inserted into the database, its membership in the ,每当元组是“在被插入了入,它的会员资格[translate]
发音：英 [t'juːplz] ；美 [t'juːplz]翻译：元组 短语 two-tuples 二元组 Tuples and Sequences 元组和序列 relations and tuples 关系和元组 Lists & Tuples 列表和元组 duplicate tuples 重复元组 time tuples 时间元组 labeled tuples 带标记元组 Partial Tuples 局部元组 name...
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(Computer Science)computinga row of values in a relational database Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 Translations ...
Tuples are commonly used in four different ways: To represent a single set of data. For example, a tuple can represent a database record, and its components can represent individual fields of the record. To provide easy access to, and manipulation of, a data set. ...
Tuples are commonly used in four different ways: To represent a single set of data. For example, a tuple can represent a database record, and its components can represent individual fields of the record. To provide easy access to, and manipulation of, a data set. The following example def...