minor modification to fit api

pom.xml

src/main/java/com/ic/er/Attribute.java

src/main/java/com/ic/er/ER.java

src/main/java/com/ic/er/Entity.java

src/main/java/com/ic/er/Trans.java

src/main/java/com/ic/er/View.java

src/main/java/com/ic/er/common/DataType.java

src/main/resources/schema-v1.sql

src/test/java/com/ic/er/TestAttribute.java

src/test/java/com/ic/er/TestER.java

src/test/java/com/ic/er/TestEntity.java

src/test/java/com/ic/er/TestRelationship.java

src/test/java/com/ic/er/TestView.java

src/test/java/com/ic/er/mapper/attributeMapperTest.java

src/test/java/com/ic/er/testMybatis.java