Delete rows from several tables - sql

Question

I use these tables to store data.
I would like to delete all data older than 1 month (for example) using one SQL query from all tables.
-- TABLE AGENT_HISTORY
CREATE TABLE AGENT_HISTORY(
EVENT_ID INTEGER NOT NULL,
AGENTID INTEGER NOT NULL,
EVENT_DATE DATE NOT NULL
)
/
CREATE TABLE CPU_HISTORY(
CPU_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
CPU_NAME VARCHAR2(50 ) NOT NULL,
CPU_VALUE NUMBER NOT NULL
)
/
CREATE TABLE CPU_TEMP_HISTORY(
CPU_TEMP_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
CPU_TEMP_NAME VARCHAR2(50 ) NOT NULL,
CPU_TEMP_VALUE NUMBER NOT NULL
)
/
CREATE TABLE MEMORY_HISTORY(
MEMORY_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
MEMORY_NAME VARCHAR2(50 ) NOT NULL,
MEMORY_VALUE NUMBER NOT NULL
)
/
CREATE TABLE DISK_HISTORY(
DISK_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
DISK_NAME VARCHAR2(50 ) NOT NULL,
DISK_VALUE NUMBER NOT NULL
)
/
CREATE TABLE NETWORK_HISTORY(
NETWORK_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
ADAPTER_NAME VARCHAR2(50 ) NOT NULL,
TRANSMITBYTES NUMBER NOT NULL,
TRANSMITSPEED NUMBER,
RECEIVESPEED NUMBER,
RECEIVEBYTES NUMBER
)
/
CREATE TABLE SWAP_HISTORY(
SWAP_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
SWAP_NAME VARCHAR2(50 ) NOT NULL,
SWAP_VALUE NUMBER NOT NULL
)
/
CREATE TABLE CONNECTIONS_HISTORY(
CONNECTIONS_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
CONNECTIONS_NAME VARCHAR2(50 ) NOT NULL,
CONNECTIONS_VALUE NUMBER NOT NULL
)
/
CREATE TABLE PARTITIONS_HISTORY(
PARTITIONS_HISTORY_ID INTEGER NOT NULL,
EVENT_ID INTEGER,
PARTITIONS_NAME VARCHAR2(50 ) NOT NULL,
PARTITIONS_VALUE NUMBER NOT NULL
)
/
Is this possible in Oracle?
I use EVENT_ID as unique key ID in all tables.

Answer 1

As suggested by "a_horse_with_no_name", you can use ON DELETE CASCADE by creating the required relationships.
For example,
ALTER TABLE table_name
ADD CONSTRAINT constraint_name
FOREIGN KEY (column1, column2, ... column_n)
REFERENCES parent_table (column1, column2, ... column_n)
ON DELETE CASCADE;
Bookmark the Database SQL Language Reference and start reading the concepts for better understanding.