Are there any differences between 'tier' and 'layer'?

mxh0506

I’m quite confused about these two words. In the following sentences:

1. As you will see, data adapter objects function as a bridge between the client tier and a relational database.

2. To showcase the usefulness of the disconnected layer, you will be updating the data library with new namespaces that make use of disconnected types.

it seems that they mean the same thing. Are there any differences between them?

老郭

tier和layer是近義詞。

tier有層級的意思，一般會有多個tier，不如士農工商，每個都是一個tier，一層壓一層

layer就是層。可能就一層。就算是多層，也不強調級別。

mxh0506

多謝老郭!