关于道德手册中independece and objectivity部分的问题-经管之家官网！

standards I(B) independence and objectivity
A gift from a client could be considered supplementary compensation.
The potential for obtaining influence to the detriment of other clients, although
present, is not as great as in situations where no compensation arrangement exists.
Therefore, members and candidates may accept “bonuses” or gifts from clients
but must disclose to their employers such benefits from clients。划线部分怎么理解
investment banking relationship ：Some sell-side firms may exert pressure on
their analysts to issue favorable research on current or prospective investmentbanking
clients. 这里用的sell-side 是因为分析师所在公司对于被分析的客户来讲是卖方么。
buy-side clients: A third source of pressure on sell-side analysts may come
from buy-side clients. Institutional clients are traditionally the primary users of
sell-side research, either directly or with soft dollar brokerage. Portfolio managers
may have significant positions in the security of a company under review......这里buy-side 是机构投资客户买分析师的报告，所以是买方？这里的sell-side 又怎么理解