@Table  
public class User extends Model {  

	@Column  
	@Index //index support
	private long userid; 

	@Column   
	private int age;  

	@Column  
	private String name;  

	public long getUserid() {
		return userid;
	}

	public void setUserid(long userid) {
		this.userid = userid;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

}

	Admin a1 = new Admin();  
	a1.setAdminName("a111");  
	a1.setId(1);  
	a1.save(getContext());  
	//or you can save in async way
	a1.saveAsync(getContext(),  new ORMcallback() {

				@Override
				public void onFinish() {
					
				}

				@Override
				public void onFaild() {
					
				}
			});

	List<Admin> admins = new Query(new Selector().from(Admin.class))
				.excute(getContext());  
	// or query  in async way
	Selector selector = new Selector().from(Admin.class);
	new Query(selector).excuteAsync(getContext(), new QueryCallback() {

			@Override
			public void onFinish(Object result) {
				List<Admin> res = (List<Admin>) result;
			}
		});

	List<Admin> admins = new Query(new Selector().from(Admin.class))
				.excute(getContext());  
	for(Admin a: admins){  
		a.delete(getContext());  
		//or you can save in async way
		a.deleteAsync(getContext(),  new ORMcallback() {

				@Override
				public void onFinish() {
				
				}

				@Override
				public void onFaild() {
				
				}
			});
	}  

	new Creater().from(User.class).build()

  
    User u = new User();    
    u.setAge(11);     
    u.setName("aaa");     
    String sql = new Inserter().insert(u ).build();    

	String sql = new Deletor()
				.from(User.class)
				.where("id", "=", "1")
				.and().where("age", ">", "18")
				.build();

	String sql = new Selector("id","title","content") //the result columns. select all(*) when nothing here
					.from(Database.class)  //table
					.distinct() // all() or distinct()
					.where("showFlag","=", 1 + "")   //`where` expression
					.and().where("version", "!=", "0")
					.groupBy("id","title")  //more than one
					.orderBy("id") //ablt to more than one
					.limit(10)
					.offset(10)
					.build();

	User u = new User();
	u.setAge(11);
	u.setName("bbb");
	u.setSaveTime(12354546);
	u.setId(1);
	String sql = new Updater()
					.update(u)
					.where("id", "=", "1")
					.build();

//drop table  
String sql = new Droper().Table().from(Animal.class).build();  
//drop index  
String sql = new Droper().Index().from(Animal.class).build();  
//invoke  sql  
DBUtils.execSQL(context,sql);

//why not do this:  
new Droper().Index().from(cls).excute(getContext());  
new Droper().Table().from(cls).excute(getContext());