Exclusive aggregation using the clustering technique : Cluster « Table « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Table
  3. Cluster

Exclusive aggregation using the clustering technique

   
SQL>
SQL>
SQL> CREATE TABLE Hard_Disk
  2     (hd_id            VARCHAR2(10) NOT NULL,
  3      capacity         VARCHAR2(20),
  4      PRIMARY KEY (hd_id))
  5     CLUSTER Part_Cluster(hd_id);

Table created.

SQL>
SQL> CREATE TABLE PartType
  2     (hd_id            VARCHAR2(10) NOT NULL,
  3      PartType_id      VARCHAR2(10) NOT NULL,
  4      description      VARCHAR2(25),
  5      PRIMARY KEY (PartType_id),
  6      FOREIGN KEY (hd_id) REFERENCES Hard_Disk (hd_id))
  7     CLUSTER Part_Cluster(hd_id);

Table created.

SQL>
SQL> drop table Hard_Disk  cascade constraints;

Table dropped.

SQL> drop table PartType cascade constraints;

Table dropped.

SQL>








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