我正在尝试提出一个用于存储来自 SMS 应用程序的消息的模式。它需要存储从发件人发送的消息以及发送给该发件人的消息。如果有人能告诉我做到这一点的最佳方法,我们将不胜感激。如果这有什么不同,我正在使用 Postgresql。
问问题
159 次
2 回答
2
以下是您可以简要执行的操作:
表联系人:
CREATE TABLE contact
(
contact_id bigserial NOT NULL,
contact_name character varying,
contact_phone_number character varying(40),
CONSTRAINT contact_pkey PRIMARY KEY (contact_id)
)
WITH (
OIDS=FALSE
);
还有短信表:
CREATE TABLE sms
(
msg_id bigint NOT NULL DEFAULT nextval('message_msg_id_seq'::regclass),
sender_id bigint,
receiver_id bigint,
msg_content text,
CONSTRAINT message_pkey PRIMARY KEY (msg_id),
CONSTRAINT sms_receiver_id_fkey FOREIGN KEY (receiver_id)
REFERENCES contact (contact_id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT sms_sender_id_fkey FOREIGN KEY (sender_id)
REFERENCES contact (contact_id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION
)
WITH (
OIDS=FALSE
);
于 2013-03-10T17:07:14.827 回答
1
你可以用两张桌子来做:
用户表:id, name, {other info about your user}
消息表:id, sender, receiver, message, {other info about message}
于 2013-03-10T16:50:21.140 回答