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The diagram below describes the connection relationships between various tables related to a company's sales business. Please observe the diagram to answer the following questions: Primary Chinese-English Correspondence. "產(chǎn)品" :"Product" "產(chǎn)品編號(hào)" : "Product ID" "產(chǎn)品經(jīng)理" :"Product Manager" “產(chǎn)品類(lèi)型”: “Product Type” “產(chǎn)品系列”:“Product Series” “城市編號(hào)”:“ City Code” “城市經(jīng)理編號(hào)”:“ City Manager ID” “城市名”: “City Name” “區(qū)域編號(hào)“:“Regional Code” “區(qū)域經(jīng)理“:“Regional Manager” “區(qū)域名“:“Regional Name“ “第三方評(píng)級(jí)“:“Third-party Rating” “金額”:“Amount” “商機(jī)編號(hào)”: “Business Opportunity ID” “上周銷(xiāo)售階段”:“ Last Week's Sales Stage” “所屬領(lǐng)域“:“Relevant Domain” “所屬行業(yè)“:“Industry Affiliation” “預(yù)計(jì)簽約日“:“Expected Signing Date” The correct description of the filtering relationship between the Product table and the Region table is:
A. Products can filter regions.
B. Regions can filter products.
C. There is no filtering relationship between them.
D. It is impossible to confirm the filtering relationship.
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Since the Opportunity Records cannot filter products or regions, there is no filtering relationship between regions and products.

正確答案是:B: Regions can filter products.

專(zhuān)業(yè)分析:

從圖表中可以看出,“產(chǎn)品”表(Product)和“區(qū)域”表(Region)之間并沒(méi)有直接的連接關(guān)系。但是,通過(guò)其他表格的連接關(guān)系可以間接地進(jìn)行過(guò)濾。

具體來(lái)說(shuō),“產(chǎn)品”表通過(guò)“商機(jī)”表(Business Opportunity)連接到“城市”表(City),再通過(guò)“城市”表連接到“區(qū)域”表(Region)。這意味著一個(gè)區(qū)域可以通過(guò)城市來(lái)過(guò)濾相關(guān)的產(chǎn)品。例如,如果我們選擇一個(gè)特定的區(qū)域,通過(guò)該區(qū)域下的城市可以找到相關(guān)的商機(jī),進(jìn)而找到與這些商機(jī)相關(guān)的產(chǎn)品。

因此,區(qū)域可以間接地過(guò)濾產(chǎn)品,所以答案是B: Regions can filter products。