Naming conventions¶

Please respect the following naming conventions when modifying the CTA Catalogue schema.

Warning

Some versions of Oracle do not allow element names longer than 30 characters.

PRIMARY KEY constraints¶

PRIMARY KEY constraints name should always finish with _PK

Example:

CREATE TABLE Person(
  ID INT NOT NULL,
  NAME VARCHAR(20)
  CONSTRAINT ID_PK PRIMARY KEY(id)
);

FOREIGN KEY constraints¶

FOREIGN KEY constraints name should always finish with _FK

Example:

CREATE TABLE TAPE(
  LOGICAL_LIBRARY_ID NUMERIC(20, 0),
  CONSTRAINT TAPE_LOGICAL_LIBRARY_FK FOREIGN KEY(LOGICAL_LIBRARY_ID) REFERENCES LOGICAL_LIBRARY(LOGICAL_LIBRARY_ID)
);

UNIQUE constraints¶

UNIQUE constraints name should always finish with _UN

Example:

CREATE TABLE STORAGE_CLASS(
  DISK_INSTANCE_NAME VARCHAR2(100),
  STORAGE_CLASS_NAME VARCHAR2(100),
  CONSTRAINT STORAGE_CLASS_DIN_SCN_UN UNIQUE(DISK_INSTANCE_NAME, STORAGE_CLASS_NAME)
);

NOT NULL constraints¶

NOT NULL constraints name should always finish with _NN

Example:

CREATE TABLE TAPE(
  VID VARCHAR2(100) CONSTRAINT TAPE_V_NN NOT NULL
);

CHECK constraints¶

CHECK constraints name should always finish with _CK

Example:

CREATE TABLE TAPE_POOL(
  IS_ENCRYPTED CHAR(1),
  CONSTRAINT TAPE_POOL_IS_ENCRYPTED_BOOL_CK CHECK(IS_ENCRYPTED IN ('0', '1'))
);

INDEX names¶

INDEX names should always finish with _IDX

Example:

CREATE INDEX TAPE_TAPE_POOL_ID_IDX ON TAPE(TAPE_POOL_ID);

SEQUENCE names¶

SEQUENCE names should always finish with _SEQ

Example:

CREATE SEQUENCE ARCHIVE_FILE_ID_SEQ
  INCREMENT BY 1
  START WITH 4294967296
  NOMAXVALUE
  MINVALUE 1
  NOCYCLE
  CACHE 20
  NOORDER;