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Oracle Corporation, 2023. All rights reserved.Tables Used in the CourseEMPLOYEESDEPARTMENTS JOB_GRADESI25 Copyright 169。 Oracle Corporation, 2023. All rights reserved.Entity Relationship Modeling ConventionsEntitySoft boxSingular, unique nameUppercaseSynonym in parenthesesAttributeSingular nameLowercaseMandatory marked with “*”O(jiān)ptional marked with “o”Unique Identifier (UID)Primary marked with “”Secondary marked with “()”EMPLOYEE* number* nameo job titleDEPARTMENT* number* nameo locationassigned toposed ofI18 Copyright 169。 Oracle Corporation, 2023. All rights reserved.System Development Life CycleStrategyandanalysisDesignBuildanddocumentTransitionProductionI10 Copyright 169。 Oracle Corporation, 2023. All rights reserved.Introduction I2 Copyright 169。 Oracle Corporation, 2023. All rights reserved.Oracle9i DatabaseMultimediaObject Relational DataMessagesDocumentsXMLI7 Copyright 169。 Oracle Corporation, 2023. All rights reserved.Data ModelsModel ofsystemin client’smindEntity model ofclient’s modelTable modelof entity modelTables on diskOracleserverI15 Copyright 169。SQL statementis entered.OracleserverStatement is sent to Oracle Server.I22 Copyright 169。 Oracle Corporation,