Databases, Chapter 14

A characteristic of Big Data that describes the quantity of data to be stored.

A characteristic of Big Data that describes the speed at which data enters the system and must be processed.

A characteristic of Big Data that describes the variations in the structure of data to be stored.

A method for dealing with data growth that involves migrating the same structure to more powerful systems.

A method for dealing with data growth that involves distributing data storage structures across a cluster of commodity servers.

The processing of data inputs in order to make decisions about which data to keep and which data to discard before storage.

A process or set of operations in a calculation.

Analyzing stored data to produce actionable results.

The characteristic of Big Data for the same data values to vary in meaning over time.

A method of text analysis that attempts to determine if a statement conveys a positive, negative, or neutral attitude.

The trustworthiness of a set of data.

The degree to which data can be analyzed to provide meaningful insights.

The ability to graphically present data in such a way as to make it understandable to users.

The coexistence of a variety of data storage and data management technologies within an organization’s infrastructure.

In the Hadoop Distributed File System (HDFS), a report sent every 6 hours by the data node to the name node informing the name node which blocks are on that data node.

In the Hadoop Distributed File System (HDFS), a signal sent every 3 seconds from the data node to the name node to notify the name node that the data node is still available.

The function in a MapReduce job that sorts and filters data into a set of key-value pairs as a subtask within a larger job.

A program that performs a map function.

The function in a MapReduce job that collects and summarizes the results of map functions to produce a single result.

A program that performs a reduce function.

A central control program used to accept, distribute, monitor, and report on MapReduce processing jobs in a Hadoop environment.

A program in the MapReduce framework responsible for running map and reduce tasks on a node.

A NoSQL database model that stores data as a collection of key-value pairs in which the value component is unintelligible to the DBMS.

In a key-value database, a logical collection of related key-value pairs.

A NoSQL database model that stores data in key-value pairs in which the value component is composed of a tag-encoded document.

A human-readable text format for data interchange that defines attributes and values in a document.

A computer-readable format for data interchange that expands the JSON format to include additional data types including binary objects.

In document databases, a logical storage unit that contains similar documents, roughly analogous to a table in a relational database.

A physical data storage technique in which data is stored in blocks, which hold data from a single column across many rows.

A physical data storage technique in which data is stored in blocks, which hold data from all columns of a given set of rows.

A NoSQL database model that organizes data into key-value pairs, in which the value component is composed of a set of columns that vary by row.

In a column family database, a column that is composed of a group of other related columns.

In a column family database, a collection of columns or super columns related to a collection of rows.

A NoSQL database model based on graph theory that stores data on relationship-rich environments as a collection of nodes and edges.

In a graph database, the representation of a single entity instance.

In a graph database, the representation of a relationship between nodes.

In a graph database, the attributes or characteristics of a node or edge that are of interest to the users.

A query in a graph database.

A data model that organizes data around a central entity based on the way the data will be used.

A data model that does not organize data around a central entity based on the anticipated usage of the data.

A MongoDB method to retrieve documents from a collection.

A declarative query language used in Neo4j for querying a graph database.