use TJTC
go 
CREATE table TC(
	TCID INT PRIMARY KEY IDENTITY(1000,1),
	TCNAME NVARCHAR(16) NOT NULL
)
CREATE TABLE XM(
	XMID INT PRIMARY KEY IDENTITY(1000,1),
	XMNAME NVARCHAR(16) NOT NULL
)
create TABLE  TCrelativeXM(
	reID INT PRIMARY KEY IDENTITY(1000,1),
	TCID INT NOT NULL,
	XMID INT NOT NULL
)

ALTER TABLE TCrelativeXM
ADD CONSTRAINT FK_TCID
foreign key (TCID) references TC(TCID)

ALTER TABLE TCrelativeXM
ADD CONSTRAINT FK_XM
foreign key(XMID) references XM(XMID)

INSERT INTO TC(TCNAME)values ('ĩ')

SELECT * FROM TC

INSERT INTO XM(XMNAME)values('Ѫ')

SELECT * FROM XM
INSERT INTO TCrelativeXM(TCID,XMID)values(1000,1001)

SELECT [TCNAME], [XMNAME] FROM TC,TCrelativeXM,XM  WHERE TC.TCID='1000' AND TCrelativeXM.TCID=TC.TCID AND TCrelativeXM.XMID=XM.XMID