 Related Questions An application plan or package is generated by the bind to define an access path. Latest Answer : DB2 plan is executable form of sql staements(DBRM).you can define DB2 plan as set of pointers to packages. And package contains machine code of best access paths. ... 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? 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 ... To maintain the integrity of DB2 objects the DBD permits access to only on object at a time. Lock contention happens if several objects are required by contending application processes simultaneously. A NULL value takes up one byte of storage and indicates that a value is not present as opposed to a space or zero value. It's the DB2 equivalent of TBD on an organizational chart and often correctly Latest Answer : A NULL value is different from a blank or a zeroA NULL value can be inserted into columns of any data typeA NULL value will evaluate to NULL in any expression (e.g.NULL multiplied by 10 is NULL)If a column has a NULL value, Oracle ignores any UNIQUE, ... A synonym is used to reference a table or view by another name. The other name can then be written in the application code pointing to test tables in the development stage and to production entities Latest Answer : Also, a Synonym is specific to the DB2 subsystem. Synonym can only access the table or view in the subsystem in which it is defined. A synonym is dropped when the table is dropped.An Alias is yet another name for a table or view. But ... An alias is an alternative to a synonym, designed for a distributed environment to avoid having to use the location qualifier of a table or view. The alias is not dropped when the table is dropped. Latest Answer : Sysnonym can be used for the user who created it. But alias can be used for any users. Synonym is dropped when base table got dropped but alias will not get dropped. Synonym is recorded in the sys.synonym table and alias is recorded in sys.tables. ... A LIKE table is created by using the LIKE parameter in a CREATE table statement. LIKE tables are typically created for a test environment from the production environment.
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