SQL error: near ".": syntax error

I am new to database. I am trying to execute some commands of sqlite3 are following.

 ATTACH DATABASE "SsmOutPort" AS SsmOutPort;
 BEGIN; 
 DROP TABLE SsmOutPort.MappingTable;
 CREATE TABLE SsmOutPort.MappingTable(id INT,tableName varchar(50),persistency   varchar(20),maxRecords INT,PRIMARY KEY(id));
 DROP TABLE SsmOutPort.MappingFields;
 CREATE TABLE SsmOutPort.MappingFields(tableId INT,fieldId INT,fieldName  varchar(50),fieldType varchar(10),defaultvalue INT,PRIMARY KEY(tableId,fieldId));
 CREATE UNIQUE INDEX X ON SsmOutPort.MappingTable(id);

Create unique Index is Giving Error

 SQL error: near ".": syntax error

or if i will remove SsmOutPort it give following error

 SQL error: no such table: main.MappingTable

Thanks in advance.