Inspired by PageRank, we propose a similar scheme called TupleRank for ranking tuples in a relational database. Database tuples naturally relate to each other through referential integrity constraints declared in the schema. However, such constraints cannot capture more general relationships such as ...
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=== Tuple in Python=== tuple = (241,"Kanna",13.1); print(tuple[0]) print(tuple[1]) print(tuple[2]) 简单的来说,tuple就是一组有序的值(an ordered set of values)。在关系型数据库(relational database)中,某个table的一个row也可以称为tuple;而在programming language中,tuple亦可以用来储存...
\[===\ Tuple\ in\ Python === \] tuple = (241,"Kanna",13.1); print(tuple[0]) print(tuple[1]) print(tuple[2]) 1. 2. 3. 4. 简单的来说,tuple就是一组有序的值(an ordered set of values)。在关系型数据库(relational database)中,某个table的一个row也可以称为tuple;而在programming...
Tuple is similar to list collection, but the difference is that list collection can only store one data type, while tuple can store multiple data types. When tuple is created, it can directly specify multiple element data types.Tuple is a basic concept in relational database. Relationship is ...
In a relational database, the part of a relation that (a) uniquely describes an entity in terms of its attributes and (b) can be represented by one row of a relation table.See alsoattribute,cardinality,entity,relation,relational database,representation,row,table,term....
(1) In a relational database, a tuple is one record (one row). See record and relational database. (2) A set of values passed from one programming language to another application program or to a system program such as the operating system. Typically separated by commas, the values may ...
(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 ...
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tuple as a simple association of objects (frequent use for a row in a relational database table) '''Tuples in Action'''# --- basic --- #x = (40)# an integery = (40,)# a one-item tuple# --- sequence-shared operations --- #T1 = (1,2) + (3,4)# concatenationT2 = (1...