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#Sas interview questions professional#

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#Sas interview questions professional#

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Applicable only for partitions, dimensions, cubes.

Processing of data is done without aggregation creation or building.

Process Data:The following are the operations by Process data.

Removing the training data that is previously loaded.

Applicable only for data mining components.

Applicable for dimensions, partitions, cubes, mining models, and structures.

Removing the data from the SSAS object and all child-level objects.

Process Clear: The below operations are performed in Process clear.

Applied on dimensions, groups, and partitions.

Adding incremental fact data into the cube.

Updating the descriptions of the attributes.

Adding new members to the dimensions from the database.

Process Ad: The process ad mode is used for performing the below operations. There are different types of processing used in SSAS. It utilizes optimized storage space with high processing time.Ģ9.What are the types of processing used in SSAS? Explain each one of them.Īns: Processing in SSAS refers to the procedure of loading the data in SSAS. There are no limitations in HOLAP like the MOLAP and ROLAP. Hence, it is a mixture of both ROLAP and MOLAP.

HOLAP: HOLAP (Hybrid Online Analytical Processing) is the storage mode where detailed data is stored in a relational database while the summary is stored and represented in the OLAP server. Using this storage mode, duplication of data occurs. The query response and processing is highs while the latency is high too. MOLAP: MOLAP (Multidimensional Online Analytical Processing) is the storage mode where the summary and detail data is represented in the multi-dimensional storage called OLAP server.

This storage model requires an ample storage space with low latency and slow processing. At the same time, the summary is stored and served in the form of a data warehouse. ROLAP: ROLAP (Real-Time Online Analytical Processing) is a storage mode where the detailed data is stored and represented in the relational database. There are three types of storage modes used in cube partitions based on the approach to storing the data. SSAS includes two different types of data called detailed data and summary. How is data stored in SSAS? Explain the different modes of storage in SSAS?Īns: Data is stored in the form of cubes in SSAS.

Medical History: Medical Condition, Date of Diagnosis (yes/no), Years of onset or occurrence, Past condition (yes/no), Current condition (yes/no).28.

Labs: Subject no, Study day, Lab parameter (Lparm), lab units, ULN (upper limit of normal), LLN (lower limit of normal), visit number, change from baseline, Greater than ULN (yes/no), lab related serious adverse event (yes/no). Vitals: Subject number, Study date, Procedure time, sitting blood pressure, Sitting Cardiac Rate, Visit number, Change from baseline, Dose of treatment at time of vital sign, Abnormal (yes/no), BMI, Systolic blood pressure, Diastolic blood pressure.ĮCG: Subject no, Study Date, Study Time, visit no, PR interval (msec), QRS duration (msec), QT interval (msec), QTc interval (msec), Ventricular Rate (bpm), Change from baseline, Abnormal. Demog: Usubjid, Patient Id, Age, Sex, Race, Screening Weight, Screening Height, BMI etcĪdverse Events: Protocol no, Investigator no, Patient Id, Preferred Term, Investigator Term, (Abdominal dis, Freq urination, headache, dizziness, hand-food syndrome, rash, Leukopenia, Neutropenia) Severity, Seriousness (y/n), Seriousness Type (death, life threatening, permanently disabling), Visit number, start time, Stop time, Related to study drug?