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Answer:
when a join condition is omited when getting result from two tables then that kind of query gives us Cartesian product, in which all combination of rows displayed. All rows in the first table is joined to all rows of second table...
Hope this answer helps!
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Is a cartesian plane the same as a cartesian coordinate?
The cartesian coordinates are plotted on the cartesian plane
What Is ANSI SQL?
ANSI SQL is the American National Standards Institute standardized Structured Query Language. ANSI SQL is the base for several different SQL languages such as T-SQL and PL/SQL. ANSI SQL is used to Create, Alter, and View data stored within a database. For more information about ANSI: http://www.ansi.org/ For more information about SQL: http://en.wikipedia.org/wiki/SQL
Parts of cartesian plane?
what are the parts of the Cartesian plane ?
Who invented the cartesian plane?
René Descartes - hence cartesian
What are Cartesian joins.?
it means cross product. so if you have 3 male and 2 female, how many couple combination we can have. 2 X 3 = 6.
Cartesian product of sets A and B is finite then does it follow that A and B are finite?
The number of elements in a Cartesian product is equal to the product in the number of elements of each set. The idea of a Cartesian product is that you combine each element from set A with each element from set B. If the product set (the Cartesian product) of sets A and B has a finite number of elements, this may be due to the fact that both A and B are finite. However, there is another possibility: that one of the sets, for example, set A, has zero elements, and the other is infinite. In this case, the Cartesian product would also have zero elements.
A set of ordered pairs is called?
Cartesian product is the name that refers to the set of the ordered pairs. The Cartesian product of two sets A and B is AB.
What is the Cartesian product?
A Cartesian product of two sets is a set that contains all ordered pairs, such that the first item is from the first set and the second item from the second set. (It can be the same set twice, instead of two different sets.) For example, the Cartesian product of the sets {A, B} and {1, 2, 3} is the set of pairs: {(A, 1), (A, 2), (A, 3), (B, 1), (B, 2), (B, 3)} In general, the Cartesian product has a number of elements that is the product of the number of elements of the two products that make it up. A Cartesian product can also be defined for more than two sets. Cartesian products are very important as the basis of mathematics. For example, relations are subsets of Cartesian products. Note that functions are a special type of relation.
What is the deffrence between sqlserver and sqlplus?
SQL Server is Microsoft's relational database product. SQL*Plus is the command line tool to access Oracle's database product.
Pl sql programs executes in sql server?
PL\SQL is an Oracle product (the PL stands for procedural language), while Sql Server most commonly refers to Microsoft SQL Server, although at one point Sybase also marketed its product as Sql Server. Microsoft and Sybase both have a procedural language feature, called T-SQL (Transact-SQL), which is similar in concept to PL\SQL, but there are significant differences in syntax and structure. An experienced developer could convert PL\SQL to T-SQL readily, but conversion would be required. It would not run without conversion.
What is the magnitude of cartesian product?
The Cartesian product of two sets, A and B, where A has m distinct elements and B has n, is the set of m*n ordered pairs. The magnitude is, therefore m*n.
What is difference between Cartesian product and natural Join Operation?
Difference Between CARTESIAN PRODUCT & NATURAL JOINT Cartesian product is like the cross product ie every element of one row of one table/entity is multiplied to every column of another table for solving linked queries of two tables ... Where as natural Join is simply joining two or more entities eliminating the common attributes or columns.. @nayan answered it :)
What is the Cartesian product of two sets?
If S and T are any two sets, then their Cartesian product, written S X T, is the set of all of the ordered pairs {s, t} such that s Є Sand t Є T.For some basic set theory, follow the related link.Also, the Cartesian product is used in the definition of "relation" and "metric." Follow the corresponding links for more information.
What should you learn to query a data base?
To query databases, one should learn the Structured Query Language (SQL). While most versions of databases havedifferentsyntaxes (usually by way of adding "extensions" to the SQL standard), learning SQL will provide most of what one would need to know to learn how to use a specific database product, such as MySQL, Access (T-SQL), and Oracle (PL/SQL).
Is a cartesian plane the same as a cartesian coordinate?
The cartesian coordinates are plotted on the cartesian plane
What is cube in sql server?
In SQL Server Analysis Services, a cube is a structure for representing data across multiple dimensions. For example, an Sales cube might have Product, Price and Customer dimensions, and each Sale would be measured against each of these dimensions. In SQL Server's T-SQL language, "cube" is an option that can be applied to the GROUP BY clause.
Prove that a finite cartesian product of countable sets is countable?
here is the proof: http://planetmath.org/encyclopedia/ProductOfAFiniteNumberOfCountableSetsIsCountable.html
