Logical connectives - sql, PL-SQL Programming

Logical Connectives - SQL

SQL's extended truth tables in which the symbol, for unknown, appears along with the usual T and F.

  1. Negation (NOT, ¬)
  2. Conjunction (AND, ∧)
  3. Disjunction (OR, ∨)
  4. Conditionals
  5. Quantification
Posted Date: 1/18/2013 4:03:33 AM | Location : United States

Related Discussions:- Logical connectives - sql, Assignment Help, Ask Question on Logical connectives - sql, Get Answer, Expert's Help, Logical connectives - sql Discussions

Write discussion on Logical connectives - sql
Your posts are moderated
Related Questions
Implicit Cursor Attributes The Implicit cursor attributes returns the information about the execution of an INSERT, DELETE, UPDATE, or SELECT INTO statement. The cursor attribu

Autonomous versus Nested Transactions Though an autonomous transaction is started by the other transaction, it is not a nested transaction for the reasons shown below: (i)

Using Operator REF: You can retrieve refs by using the operator REF that, like VALUE, takes as its argument a correlation variable. In the illustration below, you retrieve one

GOTO Statement The GOTO statement branches to a label unconditionally. The label must be exclusive within its scope and should precede an executable statement or a PL/SQL block.

Character Types The Character types allow you to store alphanumeric data, represent words and text, and manipulate the character strings. CHAR You use the CHAR dataty

Declaring Exceptions The Exceptions can be declared only in the declarative part of the PL/SQL subprogram, block, or package. By introducing its name, you can declare an excep

Biconditional - SQL The biconditional p ↔ q can be expressed in Tutorial D by p = q and the same is true of SQL. The question then arises as to whether, in SQL, p = q is equiv

Table Literals - SQL One might expect SQL to support table literals in the manner illustrated in Example 2.2, but in fact that is not a legal SQL expression. Example: Not a

Disjunction (OR, ∨) Again we have nine rows instead of just four and again, when unknown is not involved, the rows are as for 2VL. Also, when anything is paired with true, t

%TYPE Attribute The %TYPE attribute gives the datatype of a record, field, nested table, database column, or the variable. You can use the %TYPE attribute as the datatype speci