JDE 4 TH CLASS

WHAT IS CHECK IN WHAT IS CHECK OUT :

CHECK OUT :  getting the objects specification from server to work station is called check out

CHECK IN :  taking the objects specification from workstation to server is called check in

TOKEN CONCEPTS :

TOKEN:    1.token is reference to on object used to determine the ownership of that object and to prevent non owners from checking the object out in om w
2.token is used to minimize the possibility of one user overriding another user changes to and object


3.token can avoid overriding objects 


THREE TYPES OF TOKEN
1.release token
2.inherit token
3.switch token

DATA DICTIONARY:
  just as dictionary contains word definitions the j.d Edwards data dictionary is a central  repository that contains data item definitions and attributes these attributes determine how a data item
1.appears on reports and forms(such as number of decimals and default values)
2.validates data entry within an applications
3.assign column and row descriptions
4.provides text for field-sensitive help
5.is stored in a table


the data dictionary is active because changes are automatically reflected in applications without having to recompile software


how the data dictionary is used runtime
at runtime application access the following data dictionary fields
1.display decimals
2.file decimals
3.alpha description
4.data type
5.size
6.glossary
7.allow blank entry
8.upper case only
9.all triggers
10.row and column headings

1.display decimals:
just show the number display not stored in the database

2.file decimals:
the number of position to the right of the decimal of the data item that are stored in the data base


STORING THE DATA DICTIONARY AND DATA DICTIONARY ITEMS:


Data dictionary  items reside on enterprise (logic)servers in relational database tables.workstations  retrive from the publisher data dictionary(the relational data tables)only those data items necessary for the applications that you are using.this replications occurs when you use an application for the first time after installing.one world.the data dictionary information is stored on your workstation in a permenent cache under the same local path code/spice directory
as the following global tables
1.glbltbl.xdb(references for the data)
2.glbltbl.ddb(the data items)




BY MSR