管理信息系统的系统分析 (2)

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,function,Data class,Operation plan,Financial plan,Product forecasts,production process,Inventory control,Sales management,Dispatch,Operations sequence,Material Requirement,Production Capacity Planning,Product design&development,Cost accounting,Employing plan,Sales,Accounting,Shipment,Ordering service,Financial,Plan,Production,Inventory stock,Materials list,Part requirement,Task form,Material stock,Staff,Cost,Order goods,Sales region,Client,Technological process,Materials supply,C,U,U,U,U,U,U,U,U,U,U,U,U,U,U,U,U,C,C,C,C,C,U,U,U,U,U,U,U,U,U,U,C,C,C,C,C,C,U,U,U,U,U,U,U,U,U,C,U,U,U,U,Equipment load,U,U,U,U,U,C,U,C,Achievement evaluation,Check1,：,No null row/column,Check2,:Each column can have only one C,Check3,:Each column have one U least,Function,Business,plan,Production,manufacturing,Data class,C,U U,Technical preparation,Marketing,Finance and accounting,Personnel,U U U U,C,U U U U,C C,U U,U U,C,U,C C,U U,U,C,U,C,U U,U U U,C,U U,C,U,C,U,U U,C,U,U U,C,U U U,U,C,C,U,U U U,Operation plan,Financial plan,Asset size,Product forecasts,production process,Inventory control,Sales region management,Dispatch,Operations sequence,Material Requirement,Production Capacity Planning,Product design&development,Cost accounting,Employing plan,Market analysis,Financial accounting,Shipment,Ordering service,Achievement evaluation,Financial plan,Plan,Production,Inventory cost,Materials list,Part requirement,Task form,Material stock,Staff,Cost,Order goods,Sales region,Client,Technological process,Materials supply,Equipment load,定义信息结构,-划分子系统、确定子系统的实施顺序,数据类,data class,功能,Function,Data class1,数据类1,数据类3,数据类6,数据类2,数据类5,数据类8,数据类10,数据类4,数据类7,数据类9,function1,C,C,U,U,功能2,U,U,功能4,U,U,C,功能8,U,U,U,功能3,C,U,C,U,功能6,U,C,U,功能7,U,U,C,功能5,C,C,U,功能9,U,U,U,功能10,U,U,C,4.,Subsystem division,子系统的划分,BSP method is According to information used and create to dividing subsystems,it try to divide the enterprise process create information and use in a subsystem,and a reduction in the information exchange.The procedure is as follows:,BSP方法是根据信息的产生和使用来划分子系统的，它尽量把信息产生的企业过程和使用的企业过程划分在一个子系统中，从而减少了子系统之间的信息交换。划分子系统的步骤如下：,（1）,Make U/C matrix.Using defined functions and data class to make a form of function and data,i.e.U/C matrix,as shown in the table.Rows of the Matrix respect data,and columns represent function,and use letter U(use)and C(create)mean the functions use and create data.The intersection superscript C means the data generated by the corresponding function.Marking U means the function using this data class.,作U/C矩阵。利用定义好的功能和数据类作一张功能数据类表格，即U/C矩阵，如表所示。矩阵中的行表示数据类，列表示功能，并用字母U（use）和C(create)表示功能对数据类的使用和产生，交叉点上标C的表示这个数据类由相应的功能产生，标U的表示这个功能使用这个数据类。,(2),Adjustment function/data class matrix.At beginning class and process data is in random arrangement,U,C in the matrix arrangement is dispersive,will have to be adjusted.,调整功能/数据类矩阵。开始时数据类和过程是随机排列的，U、C在矩阵中排列也是分散的，必须加以调整。,First,according to a list of function arrangement,each functional groups arrange according to the resources in the life cycle of four stages.Functional groups with the same types of function,such as“business plan”“financial planning”belong to plan group,divided to groups“operating plan”.,首先，功能这一列按功能组排列，每一功能组中按资源生命周期的四个阶段排列。功能组指同类型的功能，如“经营计划”、“财务计划”属计划类型，归入“经营计划”功能组。,Secondly,in data arrange this line,making the matrix C closest to the main diagonal line.Because the function group is not absolute,may be appropriately allocate function group without the destruction logic function,make U also close to main diagonal line.After the function of above of the matrix/figures adjusting,can get the function/data class matrix displayed table below.,其次，排列“数据类”这一行，使得矩阵中C最靠近主对角线。因为功能的分组并不绝对，在不破坏功能组成的逻辑性基础上，可以适当调配功能分组，使U也尽可能靠近主对角线。上表的功能/数据类矩阵经上述调整后，得到下表表示的功能数据类矩阵。,（3）,Draw functional groups corresponding box,and give a name,this is subsystem,see table below.,画出功能组对应的方框，并起个名字，这就是子系统，见表所示。,（4）,Use arrows put down in the box with the U connected,stand for the data flow of between subsystem.For example,data class“plan”create by the operation subsystem,and technical preparation subsystem may use this data class.,用箭头把落在框外的U与子系统联系起来，表示子系统之间的数据流。例如，数据类“计划”，由经营子计划系统产生，而技术准备子系统要用到这一数据类。,In the whole system logic division we should be paid attention to:,在整个系统逻辑的划分中要注意的是：,Along the diagonal line draw subsystem one after another,can neither overlap,nor miss any data and functions.Small squares division is arbitrary,but it must give all the C element contains within in a small squares.,沿对角线一个接一个地画，既不能重叠，又不能漏掉任何一个数据和功能。小方块的划分是任意的，但必须将所有的“C”元素都包含在小方块之内。,After divide Subsystems,there are several“U“stay out the red square,this is the of data connections between subsystems in future,or shared data resources,.,These use arrow express.,子系统划定之后，留在小方块（子系统）外还有若干个“U”元素，这就是今后子系统之间的数据联系，即共享的数据资源。将这些联系用箭头表示。,Use arrows put the U which out of the boxes to connected with subsystem,stand