Fix some spellos, grammos, and term linking problems

Author: stennie

source/reference/glossary.txt

@@ -41,11 +41,11 @@ Glossary
 
    document
       A record in a MongoDB collection, and the basic unit of data
-      in MongoDB. Documents are analogous to JSON object, but exist in
-      the Database in a more type-rich format known as :term:`BSON`.
+      in MongoDB. Documents are analogous to JSON objects, but exist in
+      the database in a more type-rich format known as :term:`BSON`.
 
    field
-      A name-value pair in a term:`document`. Documents have zero
+      A name-value pair in a :term:`document <document>`. Documents have zero
       or more fields. Fields are analogous to columns in relational
       databases.
 
@@ -58,17 +58,11 @@ Glossary
    collection
       A namespace within a database for containing :term:`documents <document>`.
       Collections do not enforce a schema, but they are otherwise
-      mostly analogous to RDBMS tables.
-
-   map-reduce
-      A paradigm from functional programming used to implement aggregation
-      in a number of popular database servers. MongoDB uses map-reduce
-      in a command called :dbcommand:`mapReduce` to provide basic
-      map-reduce style aggregation.
+      mostly analogous to :term:`RDBMS` tables.
 
    $cmd
       A virtual :term:`collection` that exposes :term:`MongoDB`'s
-      term:`database commands <database command>`.
+      :term:`database commands <database command>`.
 
    JSON
       JavaScript Object Notation. A human-readable, plain text format
@@ -95,14 +89,13 @@ Glossary
       replication and automated failover. MongoDB's recommended
       replication strategy.
 
-      .. seealso:: :term:`replication`, ":doc:`/replication`" and
-         ":doc:`/core/replication`."
+      .. seealso:: ":doc:`/replication`" and ":doc:`/core/replication`."
 
    replication
      A feature allowing multiple database servers to share the same
      data, thereby ensuring redundancy and facilitating load balancing.
      MongoDB supports two flavors of replication: master-slave replication
-     and replica sets
+     and replica sets.
 
       .. seealso:: :term:`replica set`, :term:`sharding`,
          ":doc:`/replication`." and ":doc:`/core/replication`."
@@ -142,16 +135,15 @@ Glossary
       cluster`.
 
    mongod
-      The program implemeting the MongoDB database server. This server
+      The program implementing the MongoDB database server. This server
       typically runs as a :term:`daemon`.
 
       .. seealso:: ":doc:`/reference/mongod`."
 
    mongos
       The routing and load balancing process that
       acts an interface between an application and
-      a MongoDB :term:`shard cluster`. See
-      ":doc:`/reference/mongos`" for more information.
+      a MongoDB :term:`shard cluster`.
 
       .. seealso:: ":doc:`/reference/mongos`."
 
@@ -194,8 +186,8 @@ Glossary
    capped collection
       A fixed-sized :term:`collection <collection>`. Once they reach
       their fixed size, capped collections automatically overwrite
-      their oldest entries. MongoDB's replication mechanism depends on
-      capped collections, but developers may also use them in their
+      their oldest entries. MongoDB's :term:`oplog` replication mechanism depends on
+      capped collections.  Developers may also use capped collections in their
       applications.
 
       .. seealso:: The ":wiki:`Capped Collections <Capped+Collections>`" wiki page.
@@ -324,19 +316,19 @@ Glossary
       inserts a new document having the fields implied by the
       query selector and the update operation.
 
-   csv
+   CSV
       A text-based data format consisting of comma-separated values.
       This format is commonly used to exchange database between relational
-      database, since the format is well-suited to tabular data. You can
+      databases, since the format is well-suited to tabular data. You can
       import CSV files using :program:`mongoimport`.
 
-   tsv
+   TSV
       A text-based data format consisting of tab-separated values.
       This format is commonly used to exchange database between relational
-      database, since the format is well-suited to tabular data. You can
-      import CSV files using :program:`mongoimport`.
+      databases, since the format is well-suited to tabular data. You can
+      import TSV files using :program:`mongoimport`.
 
-   mime
+   MIME
       "Multipurpose Internet Mail Extensions." A standard set of type
       and encoding definitions used to declare the encoding and type
       of data in multiple data storage, transmission, and email
@@ -360,7 +352,7 @@ Glossary
       held allows concurrent readers, but no writers.
 
    config database
-      One or three :program:`mongod` instances that store all the
+      One of three :program:`mongod` instances that store all the
       metadata associated with a :term:`shard cluster`.
 
    balancer
@@ -370,7 +362,7 @@ Glossary
       the balancer for all maintenance operations on a shard cluster.
 
    fsync
-      An system call that flushes all dirty, in-memory pages to disk. MongoDB
+      A system call that flushes all dirty, in-memory pages to disk. MongoDB
       calls ``fsync()`` every 60 seconds.
 
    chunk
@@ -424,9 +416,9 @@ Glossary
       The conventional name for a background, non-interactive
       process.
 
-   pid
-      A process ID. On Unix-like systems, a unique integer assigned to
-      each running process. You can use a process's PID to inspect
+   PID
+      A process identifier. On UNIX-like systems, a unique integer PID is assigned to
+      each running process. You can use a PID to inspect
       a running process and send signals to it.
 
    JSONP
@@ -435,7 +427,7 @@ Glossary
 
    REST
      An API design pattern centered around the idea of
-     resources and the CRUD operations that apply to them. Typically
+     resources and the :term:`CRUD` operations that apply to them. Typically
      implemented over HTTP. MongoDB provides a simple HTTP REST interface
      that allows HTTP clients to run commands against the server.
 
@@ -458,12 +450,12 @@ Glossary
          ":doc:`/core/replication`."
 
    _id
-      A field containing a unique ID, typically a BSON Object ID.
-      If not specified, this value is automatically assigned while
+      A field containing a unique ID, typically a BSON :term:`ObjectId`.
+      If not specified, this value is automatically assigned
       upon the creation of a new document. You can think of the
       ``_id`` as the document's :term:`primary key`.
 
-   lvm
+   LVM
       Logical volume manager. LVM is a program that abstracts disk
       images from physical devices, and provides a number of raw disk
       manipulation and snapshot capabilities useful for system
@@ -477,10 +469,10 @@ Glossary
       order are identical.
 
    primary key
-      A record's unique, immutable identifier. In an RDBMS, the primary
+      A record's unique, immutable identifier. In an :term:`RDBMS`, the primary
       key is typically an integer stored in each row's ``id`` field.
       In MongoDB, the :term:`_id` field holds a document's primary
-      key. Primary keys are usually :term:`BSON` Object IDs.
+      key which is usually a BSON :term:`ObjectId`.
 
    unique index
       An index that enforces uniqueness for a particular field across
@@ -496,6 +488,8 @@ Glossary
       operations in a database's ``system.profile`` collection. The
       profiler is most often used to diagnose slow queries.
 
+      .. seealso:: ":ref:`Monitoring Database Systems <database-profiling>`."
+
    shard key
       In a sharded collection, a shard key is the field that MongoDB
       uses to  distribute documents among members of the
@@ -516,14 +510,14 @@ Glossary
    pre-splitting
       When deploying a :term:`shard cluster`, it is sometimes
       necessary to expedite the initial distribution of documents
-      among shards, by manually dividing the collection into chunks.
+      among shards by manually dividing the collection into chunks.
       In this case, you pre-split the chunks instead of waiting for
-      MongoDB to create splits.
+      the MongoDB :term:`balancer` to create splits.
 
    SSD
       Solid State Disk. A high-performance disk drive that uses solid
-      state elecronics, as opposed to rotating platters and a head, for
-      persistence.
+      state electronics for persistence, as opposed to the rotating platters
+      and movable read/write heads used by traditional mechanical hard drives.
 
    resident memory
       The subset of an application's memory currently stored in
@@ -535,7 +529,7 @@ Glossary
       disk an in physical RAM.
 
    pipe
-      A communication channel UNIX allowing independent processes
+      A communication channel in UNIX-like systems allowing independent processes
       to send and receive data. In the UNIX shell, piped operations
       allow users to direct the output of one command into the input
       of another.
@@ -546,7 +540,7 @@ Glossary
       support the number of hosts on the contemporary Internet.
 
    draining
-      The process of removing, or "shedding" :term:`chunks <chunk>`
+      The process of removing or "shedding" :term:`chunks <chunk>`
       from one :term:`shard` to another. Administrators must drain
       shards before removing them from the cluster.
 
@@ -586,7 +580,7 @@ Glossary
       nodes have :term:`eventual consistency`.
 
    write concern
-      A setting on writes to MongoDB that allows the use to specify,
+      A setting on writes to MongoDB that allows the user to specify,
       how the database will handle a write operation before
       returning. This often determines how many :term:`replica set`
       members should propagate a write before returning.
@@ -595,14 +589,14 @@ Glossary
 
    priority
       In the context of :term:`replica sets <replica set>`, priority
-      is a configurable values that help determine which nodes in
+      is a configurable value that helps determine which nodes in
       a replica set are most likely to become :term:`primary`.
 
       .. seealso:: ":ref:`Replica Set Node Priority
          <replica-set-node-priority>`"
 
    election
-      In the context of :term:`replica sets <replica set>`, election
+      In the context of :term:`replica sets <replica set>`, an election
       is the process by which members of a replica set select
       primary nodes on startup and in the event of failures.
 
@@ -637,7 +631,7 @@ Glossary
 
    read preference
       A setting on the MongoDB :doc:`drivers </applications/drivers>`
-      that determines where how the clients direct read
+      that determines how the clients direct read
       operations. Read preference affects all replica sets including
       shards. By default, drivers direct all reads to :term:`primary`
       nodes for :term:`strict consistency`. However, you may also
@@ -653,7 +647,7 @@ Glossary
       to keep replication lag as small as possible.
 
    driver
-      A client implementing the communcation protocol required for talking
+      A client implementing the communication protocol required for talking
       to a server. The MongoDB drivers provide language-idiomatic
       methods for interfacing with MongoDB.
 
@@ -686,7 +680,7 @@ Glossary
      clients may use to issue data-center aware operations.
 
    recovering
-      A :term:`replica set` memeber status indicating that a member
+      A :term:`replica set` member status indicating that a member
       is synchronizing or re-synchronizing its data
       from the primary node. Recovering nodes are unavailable for reads.
 
@@ -709,21 +703,27 @@ Glossary
 
       .. STUB ":doc:`/core/map-reduce`"
 
+   RDBMS
+      Relational Database Management System.  A database management system based on the relational model, typically using :term:`SQL` as the query language.
+
    SQL
-      Standard Query Language. SQL is the language used for all
-      interactions with a relational database. Provides read, write,
-      and data aggregation capabilities Often, ``SQL`` is often used
-      as a metonym for relational databases.
+      Structured Query Language (SQL) is a common special-purpose programming
+      language used for interaction with a relational database including access
+      control as well as inserting, updating, querying, and deleting data.
+      There are some similar elements in the basic SQL syntax supported by different
+      database vendors, but most implementations have their own dialects,
+      data types, and interpretations of proposed SQL standards.
+      Complex SQL is generally not directly portable between major :term:`RDBMS` products.
+      Often, ``SQL`` is often used as a metonym for relational databases.
 
    aggregation
       Any of a variety of operations that reduce and summarize large
       sets of data. SQL's ``GROUP`` and MongoDB's map-reduce are two
       examples of aggregation functions.
 
    aggregation framework
-      An aggregation command that provides a large set of operators
-      resembling the MongoDB query language and that's used to perform
-      common aggregations.
+      The MongoDB aggregation framework provides a means to calculate
+      aggregate values without having to use :term:`map-reduce`. 
 
       .. seealso:: ":doc:`/applications/aggregation`."
 
@@ -749,8 +749,8 @@ Glossary
       of any database.
 
    JavaScript
-      An popular scripting language original designed for web browers.
-      The MongoDB's shell, and certain server-side functions, use
+      A popular scripting language original designed for web browsers.
+      The MongoDB shell and certain server-side functions use
       a JavaScript interpreter.
 
    idempotent
@@ -797,10 +797,10 @@ Glossary
    TTL
       Stands for "time to live," and represents an expiration time or
       period for a given piece of information to remain in a cache or
-      other temporary storage system before deleted or aged out.
+      other temporary storage system before being deleted or aged out.
 
    ObjectId
       A special 12-byte :term:`BSON` type that has a high probability
       of being unique when generated. The most significant digits in
       an ObjectId represent the time when the Object. MongoDB uses
-      ObjectId values as the default values for :term:`_id` field.
+      ObjectId values as the default values for :term:`_id` fields.