How do you determine the data warehouse (DW) tables used in a SSRS report if you're only given the *.RPTPROJ file and also have access to the DW tables via SSMS.
The missing piece is obviously the Analysis Services cube which I haven't been given access to. I haven't worked much with this tech. I guess the flow is:
DW -> analysis services cube -> SSRS report
So without access to the cube itself, this may be a difficult task, as the fields detailed within the cube may have been renamed. Other components obviously include the creation of hierarchies and named calculations, which obfuscate the original table names.
I guess the best I can do is
either guess the original DW tables from the fields given to me in the *.RPTPROJ via visual studio i.e. the fields listed in 'Report Data' > 'DataSets'
ask to gain access to the Analysis Services olap cube config via Visual Studio
Would anyone have any other ideas?
I have to draw a database model to store data for Customer and Customer's address. Database model needs to satisfy following requirements:
Table can contain example columns
Database model should support selection of the preferred address
Database model should support marking address as unused
Does someone have an idea how to draw it?
The following is a sample logical model created using Oracle SQL Developer Data Modeler:
After engineering the model to a relational model, the resulting model is the following:
Is the above model considered to be a Physical Model? I believe this is a physical model, but the fact that it's called a relational model is making me have doubts.
From 1keydata:
Physical data model represents how the model will be built in the database. A physical database model shows all table structures, including column name, column data type, column constraints, primary key, foreign key, and relationships between tables.
What you have there represents what needs to be implemented in your database.
The relational model is "an approach to managing data using a structure and language consistent with first-order predicate logic" [Wikipedia]. In high level both diagrams follow the relational model.
We have 4 to 5 denormalized tables generated from SAP. How can we create a tabular data warehouse with denormalized tables? What is the recommended warehousing technology? All tables are pushed into SQL by SSIS by processing flat files from SAP RFC reports.
It doesn't sound like you are using Tabular for any pre-aggregation, but rather a transport mechanism to get it to Power BI. You can model these tables directly in Power BI and get all of the benefits that you have to date. You would get additional benefits as well. Power BI would then allow the user to create their own measures, enhance the model with other tables, etc. If the issue is that you don't want people accessing this SQL instance directly, you have a lot of options there as well.
What is the difference between Database and Data Source?
A data source is simply something your program relies on to get data. A database is a kind of data source that persists data to some digitized form. Other data sources include files, services, etc — these all provide data to your programs.
Further to BoltClock's answer, here are example of Databases (or Database Servers) vs various Data Sources.
Databases
SQL
Oracle
MySQL
Data Sources
All of the databases above
XML Files
CSV Files
Web Services
and many many more..
Data Source may not be connected to DB, it can be just file system or any source of data.
To quote the description from Techopedia:
A data source, in the context of computer science and computer
applications, is the location where data that is being used come from.
In a database management system, the primary data source is the
database, which can be located in a disk or a remote server. The data
source for a computer program can be a file, a data sheet, a
spreadsheet, an XML file or even hard-coded data within the program.
In a simple word, I will try to answer this question.
First, we need to understand data sources, Data source is something from where we get data to analyze or a place where data is stored. Kinds of different data sources are:
1. Databases
2. Flat files, Excel sheets, Spread Sheets
3. Web Services, Etc.
Now come to the database as in the above examples we can see there is mentioned database, which is one of the kinds of data sources. In databases companies stores their collections of records, responses, survey, etc. In databases there are two types:
1. DBMS: Database management system
2. RDBMS: Relational Database Management system
Data --- image, video, file , pdf,msg, name, age, height, weight, etc
Database is a collection of data (contact number, best friend names, shopping list is a collection of data) stored in a formet Systematically that can be easily accessed.
Example of database: attendance register
Attendance register of employees in office
Attendance register of students in school
Attandance register is a database
Database store in computer , mobile , tables, excel, folders etc
Types of database: Network Database, Object-Oriented Database, Relational Database, Hierarchical Database like attendance register, attendance page, attendance darry.
Database Management System (DBMS)------- A database management system (DBMS) is a software package create, manipulate, retrieve and manage data in a database .A DBMS generally manipulates the data itself, the data format, field names, record structure and file structure. It also defines rules to validate and manipulate this data. example of DBMS---> HR, Teacher.
Hr, Teacher maintain register same as Dbms maintain database ...
________database create ________
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MANUALLY Electrically
(Hands) ( computer,mobilephones etc)
using pen, paper using DBMS software, File system etc
A DATABASE store the data and provide a method to access it, a DBMS actually converts the queries into a meaningful command, to invoke the method used to access the database.
Some other DBMS (teacher, HR) examples include:
MySQL ( example ->eng teacher)
SQL Server ( hindi teacher)
Oracle ( evs teacher)
dBASE ( senior teacher)
FoxPro ( math teacher)
All teacher maintain attendance register same as all this DBMS maintain database..
Principal or head decide which teacher is create and maintain register same as developer decide which DBMS( my sql, oracle) is create and maintain database and which is best.
Find rohan total attendance?
Find rohan total attendance --------> HR/Teacher -----------> Attandance register
Find rohan total attendance------> DBMS(my sql) --------->database
SQL (Structured query language)
NOSQL
SQL--------- SQL stands for Structured Query Language. SQL is used to communicate with a database
it is the standard language for relational database management systems. SQL statements are used to perform tasks such as update data on a
database, or retrieve data from a database. Some common DBMS( Oracle, Sybase, Microsoft SQL Server, Access, Ingres, My sql, Oracle,Sqlite) that use
Sql . Sql database is tablebase database like Ms excel, vertically data store, relational database.
In NOSQL data is store in key value, pair like json...NOSQL used by---Redis , MongoDB. example ofsql , sql is class monitor or head student of class
that is help to the DBMS( Teacher, Hr) to manage Database (Register)... one class monitor helps all teacher same as one SQL Used by many dbms
(My sql , oracle )
Purpose .. To query and operate database system.
SQL use by NOSQL use by
1.My sql 1.Redis
2.Ms-sql 2.MongoDB etc
3. oracle etc
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|_______________DBMS__________________|