How are JNDI and JDBC related or implemented using EJB's

For instance if I create an Entity bean, how do I get access to the database?
Do I create some sort of connection method?
Is JNDI used to lookup the beans and JDBC separate from that only to connect to the database?
I am a little confused.
Thanks.

Hello,
With respect to entity bean you need a Datasource for obtaining a sql connection to database. After obtaining a connection to database you can persist your entity bean's state to database.
Once you create a datasource, you have to bind it to a JNDI name. This JNDI name can then be used to lookup datasource, just like you use telephone directory to obtain a person's telephone no if you have his address.
You also bind your enity bean to a unique JNDI name so that clients can lookup the bean and use services offered by it.
JNDI is used to lookup EJBs, datasources, JMS Connection factories, etc and JDBC is used so that you can persist your enterprise java bean's state to database.
HTH
VJ

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How are contract and service order related....urgent

Hi all
I am ABAP consultant...
I am working on Service contract Cost Management threshold alert report...
I want clear idea as to how are contract and service order related....
BAsed on contract type and contract start and ,end date,sold to party....
i need to get contract ,item , service order no: , and i have to calculate <b>INTERNAL ,EXTERNAL LABOUR, INTERNAL,EXTERNAL material COST</b>
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Dear Madhavi,
http://www.erpgenie.com/abap/tables_sd.htm
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http://www.erpgenie.com/abap/tables.htm
Regards,
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How are attribute and text master data tables linked in SAP R/3?

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how are attribute and text master data tables linked in SAP R/3?
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Best regards
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Hi Thomas
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How are Aperture and Yosemite getting along so far?

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Path:                  /Applications/Aperture.app/Contents/MacOS/Aperture
Identifier:            com.apple.Aperture
Version:               3.6 (3.6)
Build Info:            Aperture-500021000000000~3
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OS Version:            Mac OS X 10.10 (14A388b)
Report Version:        11
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Time Awake Since Boot: 350000 seconds
Crashed Thread:        8
Exception Type:        EXC_ARITHMETIC (SIGFPE)
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Using Tiscali Webmail with Firefox 6. If I try and delete an email the Ok and Cancel buttons are disabled and nothing happens, have to use F5 to take me back. IE8 works so is this a compatibility issue?

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Is there any way of doing that with one nic only?
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          > You machine could be multi-homed.
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How are attributes and texts for a master data linked and targeted to ...?

Our previous consultants used to load data to master data 0MATL_GROUP.
1. RSA1 -> InfoProvider -> Select 0MATL_GROUP or 0MATL_GROUP___T
Check these above two and find the records loaded are both 1,216 for Language EN.
We check the data flow of this master data (0MATL_GROUP or 0MATL_GROUP___T) and find there are four branches which target 0MATL_GROUP:
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2. Do we have to use 1st and 2nd branches to feed data to 0MATL_GROUP?
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Kevin,
can you check the data in Material Group charecterstic againest R/3. One moe thing check how these 4 branches Mapped to material Group?
Take the for Attributes it should be 490. it is 525. try to analyse what are the extra records comparing with Source. take the you found so and so meterial group extra then analyze from where is it getting extracted to BW i mean which DS.. (either branch 1 or brach 2 or branch 3 or 4). then check in R/3 side DS for the 4 branches. then you will know what exactly happening.
Analyze the data from step by step from r/3 to BW for each level. You will get clue.
Nagesh.
Message was edited by: Nagesh Ganisetti

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Hi,
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Regards,
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How are JNDI and JDBC related or implemented using EJB's

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