The source systems that you define in the Systems and Trust tool are stored in a special public
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repository table (C_REPOS_SYSTEM, with a display name of MDM System). This table is visible in the Schema Manager if the Show System Tables option is selected. C_REPOS_SYSTEM can also be used in packages.
The C_REPOS_SYSTEM table contains
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metadata. As with any
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systems tables, you should never alter the structure of, or data in, the C_REPOS_SYSTEM table. Doing so causes
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to behave unpredictably and can result in data loss.