Oracle Vs SAP Hana Basics

SAP HANA is an in-memory, column-oriented, relational database management system developed and marketed by SAP SE.^[1][2] Its primary function as a database server is to store and retrieve data as requested by the applications. In addition, it performs advanced analytics (predictive analytics, spatial data processing, text analytics, text search, streaming analytics, graph data processing) and includes ETL capabilities as well as an application server.

During the early development of SAP HANA in Prague, a number of technologies were developed or acquired by SAP SE. These included TREX search engine (in-memory column-oriented search engine), P*TIME (in-memory OLTP Platform acquired by SAP in 2005), and MaxDB with its in-memory liveCache engine.^[3][4] The first major demonstration of the platform was in 2008: teams from SAP SE, the Hasso Plattner Institute and Stanford University demonstrated an application architecture for real-time analytics and aggregation. Former SAP SE executive, Vishal Sikka, mentioned this architecture as "Hasso's New Architecture".^[5] Before the name "HANA" stabilized, people referred to this product as "New Database".^[6] The software was previously called "SAP High-Performance Analytic Appliance".^[7]

The first product shipped in late November 2010.^[4][8] By mid-2011, the technology had attracted interest but more experienced business customers considered it to be "in early days".^[9] HANA support for SAP NetWeaver Business Warehouse was announced in September 2011 for availability by November.^[10]

In 2012, SAP promoted aspects of cloud computing.^[11] In October 2012, SAP announced a platform as a service offering called the SAP HANA Cloud Platform^[12][13] and a variant called SAP HANA One that used a smaller amount of memory.^[14][15]

In May 2013, a managed private cloud offering called the HANA Enterprise Cloud service was announced.^[16] [17]

In May 2013, Business Suite on HANA became available, enabling customers to run SAP Enterprise Resource Planningfunctions on the HANA platform.^[18][19]

S/4HANA, released in 2015, written specifically for the HANA platform, combines functionality for ERP, CRM, SRM and others into a single HANA system.^[20] S/4HANA is intended to be a simplified business suite, replacing earlier generation ERPsystems.^[21] While it is likely that SAP will focus its innovations on S/4HANA, some customers using non-HANA systems have raised concerns of being locked into SAP products. Since S/4HANA requires an SAP HANA system to run, customers running SAP business suite applications on hardware not certified by SAP would need to migrate to a SAP-certified HANA database should they choose the features offered by S/4HANA.^[22]

Rather than versioning, the software utilizes service packs, referred to as Support Package Stacks (SPS), for updates. Support Package Stacks are released every 6 months.^[23]

In November 2016 SAP announced SAP HANA 2, which offers enhancements to multiple areas such as database management and application management and includes two new cloud services: Text Analysis and Earth Observation Analysis.^[24] HANA customers can upgrade to HANA 2 from SPS10 and above. Customers running SPS9 and below must first upgrade to SPS12 before upgrading to HANA 2 SPS01.^[25]

Overview[edit]

The key distinctions between HANA and previous generation SAP systems are that it is a column-oriented, in-memory database, that combines OLAP and OLTP operations into a single system; thus in general SAP HANA is an OLTAP system.^[26] Storing data in main memory rather than on disk provides faster data access and, by extension, faster querying and processing.^[27] While storing data in-memory confers performance advantages, it is a more costly form of data storage. Observing data access patterns, up to 85% of data in an enterprise system may be infrequently accessed^[27] therefore it can be cost-effective to store frequently accessed, or "hot", data in-memory while the less frequently accessed "warm" data is stored on disk, an approach SAP have termed "Dynamic tiering".^[28]

Column-oriented systems store all data for a single column in the same location, rather than storing all data for a single row in the same location (row-oriented systems). This can enable performance improvements for OLAP queries on large datasets and allows greater vertical compression of similar types of data in a single column. If the read times for column-stored data is fast enough, consolidated views of the data can be performed on the fly, removing the need for maintaining aggregate viewsand its associated data redundancy.^[29]

Although row-oriented systems have traditionally been favored for OLTP, in-memory storage opens techniques to develop hybrid systems suitable for both OLAP and OLTP capabilities,^[30] removing the need to maintain separate systems for OLTP and OLAP operations.

Indexer components

The index server performs session management, authorization, transaction management and command processing. The database has both a row store and a columnar store. Users can create tables using either store, but the columnar store has more capabilities and is most frequently used.^{[citation needed]} The index server also manages persistence between cached memory images of database objects, log files and permanent storage files. The XS engine allows web applications to be built.^[31]

SAP HANA Information Modeling (also known as SAP HANA Data Modeling) is a part of HANA application development. Modeling is the methodology to expose operational data to the end user. Reusable virtual objects (named calculation views) are used in the modelling process.

MVCC[edit]

SAP HANA manages concurrency through the use of multiversion concurrency control (MVCC), which gives every transaction a snapshot of the database at a point in time. When an MVCC database needs to update an item of data, it will not overwrite the old data with new data, but will instead mark the old data as obsolete and add the newer version.^[32][33]

Streaming and Data Virtualization[edit]

Data Virtualization is available via a tool named Smart Data Access.^[34] Streaming data, for example from Internet of thingsdevices, is available via a tool named Smart Data Streaming.^[35] Dedicated streaming analytics, (predictive analytics) can be employed against data ingested by Smart Data Streaming.^[36]

Big Data[edit]

In a scale-out environment, HANA can support volumes of up to a petabyte of data in-memory while returning query results in under a second.^[37] In order to balance the tradeoff of the cost of large in-memory systems (notably, the cost of RAM versus solid state or disk-based hard drives) with performance, HANA has capabilities to manage data tiering, i.e. offloading less frequently-accessed data to disk-based storage. HANA’s Data Lifecycle Management is a data administration feature that allows database administrators to define rules for when records in a table should be offloaded from memory to either a disk-based column store on the same HANA server, i.e. “warm data” storage, or to offload data from memory or disk to a separate Hadoop server, i.e. “cold” data storage.^[38]

SAP offers a separate but related product referred to as Vora for tight integration of big data stored in Hadoop with enterprise data in HANA. Vora leverages some of the same concepts from HANA, namely, in-memory storage, query pushdown, and massive parallelization.^[39]

Analytics[edit]

SAP HANA includes a number of analytic engines for various kinds of data processing. The Business Function Library includes a number of algorithms made available to address common business data processing algorithms such as asset depreciation, rolling forecast and moving average.^[40] The Predictive Analytics Library includes native algorithms for calculating common statistical measures in areas such as clustering, classification and time series analysis.^[41]

HANA incorporates the open source statistical programming language R as a supported language within stored procedures.^[42]

The column-store database offers graph database capabilities. The graph engine supports the Cypher Query Language as well as a visual graph manipulation via a tool called Graph Viewer. Graph data structures are stored directly in relational tables in HANA’s column store.^[43] Pre-built algorithms in the graph engine include pattern matching, neighborhood search, single shortest path, and strongly connected components. Use cases for the Graph Engine include things like supply chain traceability, fraud detection, and logistics and route planning.^[44]

HANA also includes a spatial database engine which supports spatial data types and SQL extensions for CRUD operations on spatial data. HANA is certified by the Open Geospatial Consortium.^[45] and integrates with ESRI’s ArcGIS geographic information system.^[46]

In addition to numerical and statistical algorithms, HANA can perform text analytics and enterprise text search. HANA’s search capability is based on “fuzzy” fault-tolerant search, much like modern web-based search engines. Results include a statistical measure for how relevant search results are, and search criteria can include a threshold of accuracy for results.^[47] Analyses available include identifying entities such as people, dates, places, organizations, requests, problems, and more. Such entity extraction can be catered to specific use cases such as Voice of the Customer (customer’s preferences and expectations), Enterprise (i.e. mergers an acquisitions, products, organizations), and Public Sector (public persons, events, organizations).^[48] Custom extraction and dictionaries can also be implemented.

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Best Lawyers in Miami

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Italy - Classic Tourist Spot

It is vacation time here and I have planned for a month long vacation in Europe, I was looking for good travel destination during this vacation period. One of my friends suggested for a beautiful vacation in Italy. There are incredible number of tourist spots in Italy. Rome is the capital of Italy and one of the nest place to spend the vacation in. There are too many hotels, bars, monuments and huge number of artistic places.

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For any place development is very important but it should happen with proper planning or else in future there may be several disadvantages or problems for the populace. newt survey is always read to assist in planning the development in such a way that it will never have an adverse effect.

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The deals at fastrackski.co.uk are available one year in advance from the day of you scheduled departure. In fasttrackski one can also combine a number of deals together so that at the best price one can enjoy the maximum. You can have the full value of your money spent. There is a lot of choice of resorts villa where you can stay during your holidays. We also have a tie-up with a lot of destinations around the world where skiing are popular particularly in France, North America and other European countries. 

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Many of us use products from Apple and we love them. most of us want to buy new products from Apple. Ii can be the best for us to get discounts on these products. When we buy these products from the store, we hardly get any discounts. However, it is possible to get discounts with the help of Discount iPad Accessories and save money on products from Apple.

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It is also possible to get facilities like free shipping on the product in addition to the discount with the help of promotional codes. You can get offers like direct cash discount of a fixed amount or other discounts and offers on different products. So keep checking the codes available and buy the product you want on lesser prices.

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Diabetes is one of the highly common diseases that is prevailing in today's world. Diabetes is basically determined from the blood sugar level in human body. It is always necessary to go for regular check up of the blood sugar levels to avoid advanced symptoms of diabetes. The Diabetes test centre and different supplies provided by them to maintain blood sugar level at the optimal threshold level also plays a vital role. We always have a confusion in which diabetes centre to go in for taking regular tests and which supplies to be used. There are huge number of diabetes centres, different ways of treatment for the disease and also different methods of undergoing the treatment. Hence it is very important to choose the right place for treating diabetes and right supplies for controlling it.

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