Top 100+ Oracle Warehouse Builder Interview Questions And Answers
Question 1. Can Owb Generate Artificial Keys?
Yes, relying at the implementation language, OWB makes use of both sequences (PL/SQL implementation) or a data generator (SQL*Loader implementation) to product these synthetic keys.
Question 2. Can The Generated Code Be Modified?
Yes, OWB generates code, which may be deployed into the database and it could be deployed into scripts (textual content documents). These text files can be changed after which deployed to the database with the modifications. Note that those changes (if made outdoor of OWB) are not stored within the repository, and that troubles with modified scripts are not supported via Oracle.
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Question three. Does Owb Support Multiple Source Objects In One Mapping?
Yes, the user can upload source gadgets to a mapping and join those through a joiner. If the tables are related through key relationships OWB picks these up robotically and populates the be a part of circumstance without the user having to open the joiner and type this in.
Question 4. Is There A Standard Time Dimension In Owb?
OWB provides a time dimension primarily based at the Gregorian calendar. The consumer can determine the ranges in this dimension and pick from some of pre constructed hierarchies.
Question 5. Does Owb Support 3rd Normal Form Targets?
Yes, OWB permit’s you outline 3rd normal shape schemas with the wizards guiding you thru the table creation technique. It also gives a easy wizard to design and outline keys among the tables.
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Question 6. Does Owb Support Dimensional Targets?
Yes, OWB has a wizard-pushed layout system for both dimensions and for data. Both may be regarded and printed in a diagramming mode.
Question 7. Which Warehouse Platforms Does Owb Support?
OWB is tuned and construct to absolutely make use of the marketplace leading-Oracle database. OWB is a code technology tool and uses the Oracle database as its transformation engine. The purchaser software program should be mounted on both a Windows 2000 or NT 4.0 purchaser
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Question eight. Does The Sap Installation Have To Be On An Oracle Database?
No, the OWB integrator answer for SAP isn't always trusted the underlying database. SAP established on a non Oracle database (Informix, DB2, SQL Server or Sybase) can be accessed with the OWB SAP integrator.
Question nine. Does Owb Support The Clob And Long Data Types?
No, OWB presently doesn’t guide these facts sorts.
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Question 10. What Sources Are Supported Through Oracle Pure Extract?
Oracle Pure Extract supports local get admission to to OS/390 structures:
Question eleven. Which Sources Are Supported By Owb?
OWB helps the following supply environments:
Oracle RDBMS, versions 7.3.4 and better
Flat files (man or woman-delimited, fixed-period, single-file and multi-file)
SAP/R3 (18.104.22.168 helps 3.1X, four.0X, four.5X, 4.6A, 4.6B)
XML files (URL, Advanced Queues, documents and so on.)
Generic Connectivity (ODBC)
Oracle Transparent Gateways (see next question for a greater particular list)
Question 12. Is Prototyping Supported By Owb?
Due to OWB’s graphical nature, prototypes can be built swiftly. OWB gives a graphical layout tool for logical representations of megastar schema and third-regular-form target databases. It contains automatic validation of supply to goal mappings, and automatic code generation of code. SQL DDL for constructing target tables, SQL*Loader control files for loading statistics from flat documents, PL/SQL for extraction and transformation and TCL to permit registration in Oracle Enterprise Manager.
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Question thirteen. How Easy Is It To Create The Warehouse Schema With Owb?
OWB offers the person a wizard-driven design surroundings to create the dimensional warehouse schema. Wizards guide the person thru the introduction of dimensions with more than one ranges and hierarchies, the creation of keys on these stages, and the linking of these dimensions to the reality tables. OWB gives wizards for all database gadgets supported in OWB.
Question 14. How Does Oracle Warehouse Builder Facilitate Etl And Warehouse Design?
OWB is a code generation tool primarily based on a metadata repository, that means that the design is translated internally by OWB, which ends in the generation of code. This code can then be used to create a facts warehouse and the accompanying facts changes.
Question 15. What Is The Oracle Warehouse Builder Repository?
The OWB repository is a server-based, low protection, powerful metadata repository based totally at the openstandard Common Warehouse Model (CWM). The repository is the valuable nervous system of the Enterprise Business Intelligence answer provided. All design records concerning sources, adjustments and warehouses is available and can be considered over the internet, utilizing Oracle Portal generation. This includes lineage and impact analysis at some point of the warehouse.
Question 16. What Is Oracle Warehouse Builder?
Oracle Warehouse Builder (OWB) is a framework for advent of extraction, transformation, and loading scripts for populating an operational statistics save, a facts mart or a data warehouse. OWB also includes a element to design the goal facts warehouse / statistics mart / operational facts save. The design component can be used to create facts warehouses designed as celebrity schema (together with aggregations / precis degrees with a couple of hierarchies) or warehouses / operational facts stores as 0.33 normal form.