我希望有人帮助我解决我正在处理的问题。我没有太多的数据库经验，但我正在尝试自学MySQL以获得与加密货币相关的个人项目。基本上，我正在尝试将来自python程序的键值对存储到数据库中，该程序将json从交换机的api解析。基于我对数据库的有限知识，我写了一个可能的解决方案：
OVERALL TABLE STRUCTURE:
TICKER = FK OF ENTRIES
ORDERBOOKS = FK to table relating orderbooks and timestamps
MARKET_HISTORIES = FK to table relating market histories and timestamps
MARKET_SUMMARIES = FK to table relating market summaries and timestamps
------------------------------------------------------------------------------------------------------------------------------------------
| KEY | TICKER | ORDERBOOKS | MARKET_HISTORIES | MARKET_SUMMARIES | TIMESTAMP |
------------------------------------------------------------------------------------------------------------------------------------------
| autoincremented |BTC-LTC |hash("BTC-LTC, "ob",timestamp)| hash("BTC-LTC","mh",timestamp) | hash("BTC-LTC","ms",timestamp) | datetime |
(unused)
------------------------------------------------------------------------------------------------------------------------------------------
MySQL schtuff:
CREATE TABLE test_table(
p_key INT NOT NULL AUTO_INCREMENT,
ticker VARCHAR(20) NOT NULL,
orderbooks INT NOT NULL,
market_histories INT NOT NULL,
market_summaries INT NOT NULL,
timestamp INT,
PRIMARY KEY (p_key));
___________________________________________________________________________________________________________________
FOREIGN KEY = hash of ticker and "ob", used to access all orderbooks relating to the ticker
timestamp = unix timestamp from when the insertion began at the overall structure
ORDERBOOKS
-----------------------------------------------------------------------------------------------------------------
| KEY | FOREIGN KEY | TIMESTAMP | BUYS_KEY | SELLS_KEY |
-----------------------------------------------------------------------------------------------------------------
| autoincremented | FK passed | timestamp | hash(FK passed, "bk", timestamp) | hash(FK passed, "sk", timestamp) |
(unused)
BUYS
----------------------------------------------------
| KEY | FOREIGN KEY | QUANTITY | RATE |
----------------------------------------------------
| autoincremented PK | buys_key | float | float|
(unused)
SELLS
----------------------------------------------------
| KEY | FOREIGN KEY | QUANTITY | RATE |
----------------------------------------------------
| autoincremented PK | sells_key | float | float|
(unused)
_______________________________________________________________________________________________
FOREIGN KEY = hash of ticker and "mh", used to reference Market History entries
timestamp = unix timestamp from when the insertion began at the overall structure
MARKET HISTORY
------------------------------------------------------------------------------
| KEY | FOREIGN KEY | TIMESTAMP | RESULT_KEY |
------------------------------------------------------------------------------
| autoincremented | FK passed | timestamp | hash(FK passed, "mh", timestamp) |
(unused)
RESULT_MH
------------------------------------------------------------------------------------------------------------
| KEY | FOREIGN KEY | ID | UNIQUE_TIMESTAMP | QUANTITY | PRICE | TOTAL | FILLTYPE | ORDERTYPE |
------------------------------------------------------------------------------------------------------------
| autoincremented PK | results_key | int| datetime object? | float | float | float | string | string |
(unused)
_______________________________________________________________________________________________________________
FOREIGN KEY = hash of ticker and "ms", used to reference Market Summary entries
timestamp = unix timestamp from when the insertion began at the overall structure
MARKET SUMMARY
------------------------------------------------------------------------------
| KEY | FOREIGN KEY | TIMESTAMP | RESULT_KEY |
------------------------------------------------------------------------------
| autoincremented | FK passed | timestamp | hash(FK passed, "ms", timestamp) |
(unused)
RESULT_MS
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
| KEY | FOREIGN KEY | HIGH | LOW | VOLUME | LAST | BASEVOLUME | UNIQUE_TIMESTAMP | BID | ASK | OPEN_BUY_ORDERS | OPEN_SELL_ORDERS | PREVDAY | CREATED |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
| autoincremented PK | results_key | float|float| float | float| float | datetime object? |float|float| int | int | float | datetime|
(unused)
所以我遇到的问题/困惑是如何让所有这些外键相互关联，以及如何编程，我甚至可以让它工作。基于我所读到的，我假设MySQL代码类似于：外键（订单簿）引用订单簿（foreign_key），这听起来是对的吗？我希望能够存储市场的特定快照并随意访问它们。
例如，如果我现在在UNIX时间1499882777拍摄市场快照，然后在UNIX时间1499882800拍摄另一张快照，我希望能够访问这两个条目并在那些时间访问所有相关数据（订单，市场历史，市场总结）。
我在这里走在正确的轨道上吗？我对数据库很陌生，并希望尽可能高效/健壮。
提前感谢您的投入！ ：d
编辑1： 在重新阅读这个必须是第20次之后，我想知道我是否过于复杂的市场历史和市场汇总表
编辑2：
我在mysql可执行文件中使用了这个：
create table fk_test( p_key INT NOT NULL AUTO_INCREMENT,
fk INT, buys_key INT,
sells_key INT,
PRIMARY KEY (p_key),
FOREIGN KEY (fk) REFERENCES test_table(orderbooks));
收到此错误：ERROR 1215 (HY000): Cannot add foreign key constraint