How to update multiple tables using results from query

Question

I'm a bit rusty on this stuff and am hoping for some help.
Table 1 is:
location_id, location_name
Table 2 is
location_id, employee_id and misc. other columns
Then there are multiple tables with associated data, keys being location_id and employee_id.
There are no established relationships.
Trying to come up with a process to change location_id for all employees assigned to a particular location.
It seems to me that the basics are
select employee_id from Table2 where location_id='xxxxxx'
Then take each employee_id returned and change their location_id in each of the other tables
I'm not clear on how to load the returned employee id's as variables and then loop through them.
Thanks

Answer 1

Thanks for the welcome. I'll read up on the rules now.
Below is the DDL for a couple of the tables.
Version = 11g
I would query the users table for all users with a certain site_id and then use them to update the site_id in the users table (and other tables)
-- DDL for Table USERS
CREATE TABLE "USERS"
(     "USERID" VARCHAR2(8 BYTE),
     "PASSWORD" VARCHAR2(50 BYTE),
     "FIRST_NAME" VARCHAR2(50 BYTE),
     "LAST_NAME" VARCHAR2(50 BYTE),
     "SITE_ID" VARCHAR2(5 BYTE),
     "ROLE_ID" VARCHAR2(1 BYTE)
) SEGMENT CREATION IMMEDIATE
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "SITES_DATA_TS"
CACHE ;
-- DDL for Table EMPLOYEE_PROFILE
CREATE TABLE "EMPLOYEE_PROFILE"
(     "EMPLOYEEID" VARCHAR2(9 BYTE),
     "PROGRAM" NUMBER,
     "REQUIREMENT" NUMBER,
     "JOBNUM" VARCHAR2(50 BYTE),
     "STATUS" VARCHAR2(50 BYTE),
     "PROGRAM_TYPE" VARCHAR2(50 BYTE),
     "SITE_ID" VARCHAR2(5 BYTE),
     "NUM_QUAL_TEST_ATTEMPTS" NUMBER(7,0)
) SEGMENT CREATION IMMEDIATE
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "SITES_DATA_TS"
CACHE ;