Spanish demystified a self teaching guide

... Investing Demystified Italian Demystified Java Demystified JavaScript Demystified Lean Six Sigma Demystified Linear Algebra Demystified Macroeconomics Demystified Management Accounting Demystified Math ... Thermodynamics Demystified Demystified Series Accounting Demystified Advanced Calculus Demystified Advanced Physics Demystified Advanced Statistics Demystified Al...

Ngày tải lên: 08/04/2014, 11:43

... were allowed? PLANCK’S RADICAL ASSUMPTION A practical blackbody is made of a metallic cavity with a small hole through which radiation can escape Planck made the assumption that an exchange of ... x /a) a The probability that the particle is found in the interval a/ 2 ≤ x ≤ 3a/ 4 is given by: P 3a a ≤x≤ = 3a a = a = x a a 3a a 3a a 3a = a |ψ(x)| dx = − cos (2π x) dx dx −...

Ngày tải lên: 05/06/2014, 11:20

... most organizations, a technician known as a database administrator (DBA) handles the details of installing and configuring the database software and data files and making the database available ... The Object-Relational Model A Brief History of Databases Why Focus on Relational? Quiz 1 7 11 13 15 16 17 19 20 CHAPTER Exploring Relational Database Components Conceptual Database...

Ngày tải lên: 08/08/2014, 18:22

... it replaced d It provides both physical and logical data independence e Databases are always managed by a Database Management System User views are important because: a Application programs reference ... in a relational database Each column must be assigned a unique name (within the table) and a data type A data type is a category for the format of a particular column Data t...

Ngày tải lên: 08/08/2014, 18:22

... Can be one-to-many, one-to-one, or many-to-many The Microsoft Access Show Table dialog box: a Lists all tables in the database and allows for the metadata about tables to be added, changed, and ... Cartesian product formula 18 Microsoft Access queries: a Are called views in most other relational databases b Are called entities in most other relational databases c May be stored in the...

Ngày tải lên: 08/08/2014, 18:22

... each database user session as soon as the user connects to the database At any time, the database user can issue a COMMIT, which makes all the database changes completed up to that point permanent ... subsets: a Data Selection Language (DSL) b Data Control Language (DCL) c Data Purge Language (DPL) d Data Query Language (DQL) e Data Replication Language (DRL) SQL was first developed: a...

Ngày tải lên: 08/08/2014, 18:22

... planning takes place b Additional hardware is added as the database grows c Additional database indexes may be added d DDL is written to define database objects e Application programs are written ... also that normalization is intended to remove anomalies from databases that are used for online transaction-processing systems Databases that store historical data used solely for analytical...

Ngày tải lên: 08/08/2014, 18:22

... where: a A simple update requires updates to multiple rows of data b Data cannot be updated because it does not exist in the database CHAPTER Logical Database Design Using Normalization c Data cannot ... a third normal form relation becomes a An index b A referential constraint c A table d A view e A database The insert anomaly refers to a situation where: a Data must be in...

Ngày tải lên: 08/08/2014, 18:22

... a best practice because it can lead to a lack of data sharing Moreover, placing geographic or organizational unit names in table names plays havoc every time the organization changes 211 Databases ... complicated joins and calculations from the database users For example, views can easily calculate ages based on birth dates, and they can summarize data in nearly any way imaginable CHAP...

Ngày tải lên: 08/08/2014, 18:22

... Connecting Databases to Java Applications Java started as a proprietary programming language (originally named Oak) that was developed by Sun Microsystems It rapidly became the de facto standard programming ... SQL calls are automatically mapped to variables in Java classes The Java programmer may then operate on the returned data as native Java objects JSQL (Java SQL) JSQL (Java SQL) is...

Ngày tải lên: 08/08/2014, 18:22

... b Was invented by Ralph Kimball c Handles high volumes of transactions d May use data stored in an operational database e May use data stored in a data warehouse database 303 304 Databases Demystified ... Codd b Was invented by Ralph Kimball c Handles high volumes of transactions d May use data stored in an operational database e May use data stored in a data warehouse database OLAP:...

Ngày tải lên: 08/08/2014, 18:22

... model database, 261 models, database, modules, 55 MOLAP databases, 299–301 msdb database, 261 multidimensional OLAP databases, 299–301 multiple joins, 77–80 multivalued attributes, 150 N namespace, ... Automated b Abbreviated c Atomicity d Autonomous e Analog 82 Database locks: a Are implemented in exactly the same way by all major database vendors b Are controls placed by the DBMS to res...

Ngày tải lên: 08/08/2014, 18:22