Recently a new breed of "multi-model" databases has emerged. They are a document store, a graph database and a key/value store combined in one program. Therefore they are able to cover a lot of use cases which otherwise would need multiple different database systems.
This approach promises a boost to the idea of "polyglot persistence", which has become very popular in recent years although it creates some friction in the form of data conversion and synchronisation between different systems. This is, because with a multi-model database one can enjoy the benefits of polyglot persistence without the disadvantages.
In this talk I will explain the motivation behind the multi-model approach, discuss its advantages and limitations, and will then risk to make some predictions about the NoSQL database market in five years time, which I shall only reveal during the talk.
This Presentation is about NoSQL which means Not Only SQL. This presentation covers the aspects of using NoSQL for Big Data and the differences from RDBMS.
Recently a new breed of "multi-model" databases has emerged. They are a document store, a graph database and a key/value store combined in one program. Therefore they are able to cover a lot of use cases which otherwise would need multiple different database systems.
This approach promises a boost to the idea of "polyglot persistence", which has become very popular in recent years although it creates some friction in the form of data conversion and synchronisation between different systems. This is, because with a multi-model database one can enjoy the benefits of polyglot persistence without the disadvantages.
In this talk I will explain the motivation behind the multi-model approach, discuss its advantages and limitations, and will then risk to make some predictions about the NoSQL database market in five years time, which I shall only reveal during the talk.
This Presentation is about NoSQL which means Not Only SQL. This presentation covers the aspects of using NoSQL for Big Data and the differences from RDBMS.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2. NoSQL databases are currently a hot topic in some parts of computing, with
over a hundred
different NoSQL databases.
NoSQL stands for:
No Relational
No RDBMS
Not Only SQL
NoSQL is an umbrella term for all databases and data stores that don’t follow
the RDBMS principles
A class of products
A collection of several (related) concepts about data storage and
manipulation
Often related to large data sets
3. Non-relational DBMSs are not new
But NoSQL represents a new incarnation
Due to massively scalable Internet applications
Based on distributed and parallel computing
Development
Starts with Google
First research paper published in 2003
Continues also thanks to Lucene's developers/Apache (Hadoop) and Amazon
(Dynamo)
Then a lot of products and interests came from Facebook, Netfix, Yahoo, eBay,
Hulu, IBM, and many more
4. Three major papers were the seeds of the NoSQL
movement
BigTable (Google)
Dynamo (Amazon)
Distributed key-value data store
Eventual consistency
CAP Theorem (discuss in a sec ..)
5. NoSQL comes from Internet, thus it is often related to the “big
data” concept
How much big are “big data”?
Over few terabytes Enough to start spanning multiple storage
units
Challenges
Efficiently storing and accessing large amounts of data is
difficult, even more considering fault tolerance and backups
Manipulating large data sets involves running immensely
parallel processes
Managing continuously evolving schema and metadata for
semi-structured and un-structured data is difficult
6. Discussing NoSQL databases is complicated
because there are a variety of types:
Sorted ordered Column Store
Optimized for queries over large datasets, and store
columns of data together, instead of rows
Document databases:
pair each key with a complex data structure known as a document.
Key-Value Store :
are the simplest NoSQL databases. Every single item in the
database is stored as an attribute name (or 'key'), together with its
value.
Graph Databases :
are used to store information about networks of data, such as social
connections.
7. Documents
Loosely structured sets of key/value pairs in documents, e.g., XML,
JSON, BSON
Encapsulate and encode data in some standard formats or
encodings
Are addressed in the database via a unique key
Documents are treated as a whole, avoiding splitting a document
into its constituent name/value pairs
Allow documents retrieving by keys or contents
Notable for:
MongoDB (used in FourSquare, Github, and more)
CouchDB (used in Apple, BBC, Canonical, Cern, and more)
8. Store data in a schema-less way
Store data as maps
HashMaps or associative arrays
Provide a very efficient average running
time algorithm for accessing data
Notable for:
Couchbase (Zynga, Vimeo, NAVTEQ, ...)
Redis (Craiglist, Instagram, StackOverfow,
flickr, ...)
Amazon Dynamo (Amazon, Elsevier,
IMDb, ...)
Apache Cassandra (Facebook, Digg,
Reddit, Twitter,...)
Voldemort (LinkedIn, eBay, …)
Riak (Github, Comcast, Mochi, ...)
9. Data are stored in a column-oriented way
Data efficiently stored
Avoids consuming space for storing nulls
Columns are grouped in column-families
Data isn’t stored as a single table but is stored by column families
Unit of data is a set of key/value pairs
Identified by “row-key”
Ordered and sorted based on row-key
Notable for:
Google's Bigtable (used in all
Google's services)
HBase (Facebook, StumbleUpon,
Hulu, Yahoo!, ...)
10. • Consistency and Availability is not “binary”
decision
• AP systems relax consistency in favor of
availability – but are not inconsistent
• CP systems sacrifice availability for consistency-
but are not unavailable
• This suggests both AP and CP systems can offer a
degree of consistency, and availability, as well as
partition tolerance
