java - How many hit to database for one-to-many query using hibernate? -

i having one-to-many relationship between employee , department , class looking :

@entity public class employee { @id private int empid; private string empname; @onetomany @jointable (name = "relationaltable" , joincolumns = @joincolumn(name = "empid"),inversejoincolumns=@joincolumn(name = "deptid")) private collection <department> dept = new arraylist<department>();  public int getempid() {     return empid; } public void setempid(int empid) {     this.empid = empid; }  public collection<department> getdept() {     return dept; } public void setdept(collection<department> dept) {     this.dept = dept; }   @column  public string getempname() {     return empname; } public void setempname(string empname) {     this.empname = empname; } } 

and department class :

@entity public class department {    int deptid;    string deptname;    private employee emp;     @manytoone    public employee getemp() {       return emp;    }     public void setemp(employee emp) {       this.emp = emp;    }     @id    public int getdeptid() {       return deptid;    }     public void setdeptid(int deptid) {       this.deptid = deptid;    }     @column    public string getdeptname() {       return deptname;    }     public void setdeptname(string deptname) {       this.deptname = deptname;    } } 

if fetch department. fetch employee @ same time associated it. department id 1 there 1000 employee. how many queries execute @ time database fetch data?

if fetchtype lazy hibernate retrieve record when try access departments

if eager hibernate join queries 1 queries , execute 1 query.