Data loading from flat file to cube using bw3.5

Question

Hi Experts,
                   Kindly give  me the detailed steps with screens  about Data loading from flat file to cube using bw3.5
       ...............Please

Answer 1

Hi ,
Procedure
You are in the Data Warehousing Workbench in the DataSource tree.
       1.      Select the application components in which you want to create the DataSource and choose Create DataSource.
       2.      On the next screen, enter a technical name for the DataSource, select the type of DataSource and choose Copy.
The DataSource maintenance screen appears.
       3.      Go to the General tab page.
                            a.      Enter descriptions for the DataSource (short, medium, long).
                            b.      As required, specify whether the DataSource builds an initial non-cumulative and can return duplicate data records within a request.
                            c.      Specify whether you want to generate the PSA for the DataSource in the character format. If the PSA is not typed it is not generated in a typed structure but is generated with character-like fields of type CHAR only.
Use this option if conversion during loading causes problems, for example, because there is no appropriate conversion routine, or if the source cannot guarantee that data is loaded with the correct data type.
In this case, after you have activated the DataSource you can load data into the PSA and correct it there.
       4.      Go to the Extraction tab page.
                            a.      Define the delta process for the DataSource.
                            b.      Specify whether you want the DataSource to support direct access to data.
                            c.      Real-time data acquisition is not supported for data transfer from files.
                            d.      Select the adapter for the data transfer. You can load text files or binary files from your local work station or from the application server.
Text-type files only contain characters that can be displayed and read as text. CSV and ASCII files are examples of text files. For CSV files you have to specify a character that separates the individual field values. In BI, you have to specify this separator character and an escape character which specifies this character as a component of the value if required. After specifying these characters, you have to use them in the file. ASCII files contain data in a specified length. The defined field length in the file must be the same as the assigned field in BI.
Binary files contain data in the form of Bytes. A file of this type can contain any type of Byte value, including Bytes that cannot be displayed or read as text. In this case, the field values in the file have to be the same as the internal format of the assigned field in BI.
Choose Properties if you want to display the general adapter properties.
                            e.      Select the path to the file that you want to load or enter the name of the file directly, for example C:/Daten/US/Kosten97.csv.
You can also create a routine that determines the name of your file. If you do not create a routine to determine the name of the file, the system reads the file name directly from the File Name field.
                              f.      Depending on the adapter and the file to be loaded, make further settings.
■       For binary files:
Specify the character record settings for the data that you want to transfer.
■       Text-type files:
Specify how many rows in your file are header rows and can therefore be ignored when the data is transferred.
Specify the character record settings for the data that you want to transfer.
For ASCII files:
If you are loading data from an ASCII file, the data is requested with a fixed data record length.
For CSV files:
If you are loading data from an Excel CSV file, specify the data separator and the escape character.
Specify the separator that your file uses to divide the fields in the Data Separator field.
If the data separator character is a part of the value, the file indicates this by enclosing the value in particular start and end characters. Enter these start and end characters in the Escape Charactersfield.
You chose the; character as the data separator. However, your file contains the value 12;45 for a field. If you set u201C as the escape character, the value in the file must be u201C12;45u201D so that 12;45 is loaded into BI. The complete value that you want to transfer has to be enclosed by the escape characters.
If the escape characters do not enclose the value but are used within the value, the system interprets the escape characters as a normal part of the value. If you have specified u201C as the escape character, the value 12u201D45 is transferred as 12u201D45 and 12u201D45u201D is transferred as 12u201D45u201D.
In a text editor (for example, Notepad) check the data separator and the escape character currently being used in the file. These depend on the country version of the file you used.
Note that if you do not specify an escape character, the space character is interpreted as the escape character. We recommend that you use a different character as the escape character.
If you select the Hex indicator, you can specify the data separator and the escape character in hexadecimal format. When you enter a character for the data separator and the escape character, these are displayed as hexadecimal code after the entries have been checked. A two character entry for a data separator or an escape sign is always interpreted as a hexadecimal entry.
                            g.      Make the settings for the number format (thousand separator and character used to represent a decimal point), as required.
                            h.      Make the settings for currency conversion, as required.
                              i.      Make any further settings that are dependent on your selection, as required.
       5.      Go to the Proposal tab page.
This tab page is only relevant for CSV files. For files in different formats, define the field list on the Fields tab page.
Here you create a proposal for the field list of the DataSource based on the sample data from your CSV file.
                            a.      Specify the number of data records that you want to load and choose Upload Sample Data.
The data is displayed in the upper area of the tab page in the format of your file.
The system displays the proposal for the field list in the lower area of the tab page.
                            b.      In the table of proposed fields, use Copy to Field List to select the fields you want to copy to the field list of the DataSource. All fields are selected by default.
       6.      Go to the Fields tab page.
Here you edit the fields that you transferred to the field list of the DataSource from the Proposal tab page. If you did not transfer the field list from a proposal, you can define the fields of the DataSource here.
                            a.      To define a field, choose Insert Row and specify a field name.
                            b.      Under Transfer, specify the decision-relevant DataSource fields that you want to be available for extraction and transferred to BI.
                            c.      Instead of generating a proposal for the field list, you can enter InfoObjects to define the fields of the DataSource. Under Template InfoObject, specify InfoObjects for the fields in BI. This allows you to transfer the technical properties of the InfoObjects into the DataSource field.
Entering InfoObjects here does not equate to assigning them to DataSource fields. Assignments are made in the transformation. When you define the transformation, the system proposes the InfoObjects you entered here as InfoObjects that you might want to assign to a field.
                            d.      Change the data type of the field if required.
                            e.      Specify the key fields of the DataSource.
These fields are generated as a secondary index in the PSA. This is important in ensuring good performance for data transfer process selections, in particular with semantic grouping.
                              f.      Specify whether lowercase is supported.
                            g.      Specify whether the source provides the data in the internal or external format.
                            h.      If you choose the external format, ensure that the output length of the field (external length) is correct. Change the entries, as required.
                              i.      If required, specify a conversion routine that converts data from an external format into an internal format.
                              j.      Select the fields that you want to be able to set selection criteria for when scheduling a data request using an InfoPackage. Data for this type of field is transferred in accordance with the selection criteria specified in the InfoPackage.
                            k.      Choose the selection options (such as EQ, BT) that you want to be available for selection in the InfoPackage.
                              l.      Under Field Type, specify whether the data to be selected is language-dependent or time-dependent, as required.
       7.      Check, save and activate the DataSource.
       8.      Go to the Preview tab page.
If you select Read Preview Data, the number of data records you specified in your field selection is displayed in a preview.
This function allows you to check whether the data formats and data are correct.
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