A DB2 bind is a process that builds an access path to DB2 tables.
Latest Answer : A BIND process establishes a relationship between an APPLICATION PROGRAM and its RELATIONAL DATA. ...
These are attributes of one table that have matching values in a primary key in another table, allowing for relationships between tables.
Latest Answer : Foreign Keys are keys used in a table as an attribute and are primary keys of some other table ...
Describe the elements of the SELECT query syntax. SELECT element FROM table WHERE conditional statement?
Explain the use of the WHERE clause. WHERE is used with a relational statement to isolate the object element or row.
Joins, unions and nested selects are used to retrieve data.
Latest Answer : The two tables has to be linked.EXEC SQL
SELECT A.EMP_ID, B.WAGE FROM Table1 A, Table2 B WHERE A.EMP_ID = B.EMP_ID
AND A.EMP_ID = ...
A view is a virtual table made up of data from base tables and other views, but not stored separately.
Latest Answer : View is a vitual table, which do not have physical storage.we can create a view from one or more than one table(s) or view(s).if any modification is done on the base table the view is also get effected.but they are some limitations while creating ...
An outer join includes rows from tables when there are no matching values in the tables.
Latest Answer : 3 types. Left outer Join----left table unmatched valyes are included.Right Outer Join---right table unmatched values are included.Full outer Join----Both table unmatched values are selected. ...
A subselect is a select which works in conjunction with another select. A nested select is a kind of subselect where the inner select passes to the where criteria for the outer select.
Group by controls the presentation of the rows, order by controls the presentation of the columns for the results of the SELECT statement.
Latest Answer : Group By forms Groups (of course), but this means it also SORTS; but it will also retrieve a DISTINCT RECORD SETORDER BY Sorts by the columns included in the Statement, and does not retrieve DISTINCT Records.Neither determines the order of the columns ...
The explain statement provides information about the optimizer's choice of access path of the sql.
Latest Answer : The EXPLAIN statement obtains information about access path selection for an explainable statement. A statement is explainable if it is a SELECT or INSERT statement, or the searched form of an UPDATE or DELETE statement.The information obtained is placed ...