What does a "flag" means in DAL (Data access layer) table object

The code that I am reading looks like :

@Entity
@Table(name = "TABLE_NAME")
public interface DAL_Object {
     long condition_A_statisfied_Flag = 0x00000001;
     .
     .
     .
     @Id
     @Column(name="COLUMN1_NAME")
     .
     .
     .
}

What does these "flags" mean in the code? Is that some programming convention related to database or SQL?

condition_A_statisfied_Flag is just a long type variable some one has declared in this "DAL_Object" interface. And 1 is assigned to this variable. This has nothing to do with database or sql.

long condition_A_statisfied_Flag = 0x00000001;