Two programers not interfering with each other

Hello,
I was asked this today and I did not know the answer.
If I have two programers, which are modifying (let's say) a package at the same time and each one of them is modifying a different part of it. Does Oracle provide any method (except some verbal aggrement) to insure that these two guys will not be modifying the same thing.
Thanx for replies.

In order to modify a package, the developer would need to acquire a lock on the package. So Oracle would prevent two developers from modifying a package simultaneously. It would do nothing, though, to prevent two developers from serially overwriting each other's changes. That's one of the many reasons that you use an external source control system when developing any code, including database packages.
Justin

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Hello,
I am creating an application where I display simulations. In order to keep the view of the simulation ticking along nicely, I paint the view to an offscreen buffer, and then paint the offscreen buffer to the screen.You may know that Swing uses double-buffering by default. So you usually don't really need to tweak Swing's own offscreen buffers.
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This has worked fine for me, so long as I was only viewing one single simulation on the screen at a time. I have now started displaying multiple simulations, and the views have started to interact with eachother -- one will paint over the other, particularly when I click or drag the simulation.
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Edited by: jduprez on Jun 2, 2011 12:10 AM
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SWITCH-A output---------
SWITCH-A(config)#do sh int f0/1 switch
Name: Fa0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
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Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
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VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
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SWITCH-B output.......
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