tailieunhanh - What is an EPICS Database?

By default, database server connections are always to the DEFAULT version. To change which version of a geodatabase you are connected to, you will use the Change Version dialog box. If you were to close ArcMap, the next time you started ArcMap and connected to the geodatabase through the database server node, you would again be connected to the DEFAULT version. To save your connection to a specific version, you can save a spatial database connection to this version. This creates a connection file under the Database Connections node in the Catalog tree. Database connections save the connection properties you assign until you change them. That. | What is an EPICS Database Andrew Johnson October 26 2004 Argonne National Laboratory A . Department of Energy Office of Science Laboratory Office of Science Anorofor bì Thd 1f rìi ar if r f US. Department of Energy jpeiaied by The UniVeiSiiy of shfcago Advanced Photon Source 1 Outline Records Fields and field types Record Scanning Input and Output record types Links link address types Connecting records together Protection mechanisms Alarms deadbands simulation and security A Pioneering Science and Technology Advanced Photon Source Office of Science . Department of Energy 2 Advanced Database Records Fields ----------------------------------- i Acontrol system using EPICS will contain one or more IOCs Each IOC loads one or more Databases telling it what to do A Database is a collection of Records of various types A Record is an object with A unique name A behaviour defined by its record type class Controllable properties fields Optional associated hardware I O device support Links to other records A Pioneering Science and Technology Office of Science . Department of Energy