See the attached file 4

*********************** ****************** ********************************* Data ** a ********** ** facts ***** *********** ** *** ******** of ***** ** ***** them **** context *********** ** ********* ****** **** that ***** ** ************ * mini-world ****** ** categories of *** **** world about which **** ** ****** in ** ********* collection ** ********** information ** **** commonly ******** to ** a ******** The database ********** system **** ******** * user’s ****** *** identify the ******** by query3 * database refers to * **** ********** ** ************ **** A database system ** * ******** **** is **** ** ******** ***** *** ******** **** **** *** ******** *** ******** ****** ********** include;-Storage ************ ************** ********************** *************** *********** manager-Reporting and monitoring tools-Data ********** ******** ********** ****** ***** ** data ********** management ************* and *********** ** **** ******** are ******** DBMS **** *** ** ***** ** *** management ** data storage ** ******** ******* ********* **** *** *** *********** * **** to ***** **** DBMS ********** ******** ** **** by ************ ****** ****** During **** ******** *** *** backup ********* *** DBMS ********** ********* *** safety of **** ** maintained ** ********* ****** procedures ***** ****** follow * ******** ******* **** ****** ************** ** ********* by *** **** ************ data ************ ****** operations *** **** ******* ******** ***** *** access *** **** **** without *** data ***** ********** **** *** **** ********* management ** ******** ** there are ******* ***** **** prevent **** ********** *** ****** data ************ The trade-offs **** ****** **** include data *********** **** ******** ***** ****** needs ************** *** *********** ******** ********** **** ***** In *** ********* * summary ** *** ****** how long * document ** **** when ******** was ******* among ***** *********** *** stored ** ** used ** *** **** **** * **** ***** ** retrieve or store **** *********** ********* *** *** *** ****** date *** ************ when ********** or storing information ** the DBMS6 ******** internal *** ********** schema *** different ****** ***** multi-user ******* ** *** **** *** allowing mapping *********** *** **** ********* ******* **** ********** ******** ***** (Utilized ** * **** ********* Data Manipulation language (DML) ***** ** a ****** *** ***** to ****** delete or ****** a **** of * database) **** Control ******** ***** (Used by an administrator ** revoke ****** ** users) Transaction ******* Language ***** (It can ** **** by an auditor ** ************* ** ********** Data ********** *** **** to **** ******** analysis ** evaluation ** *** ******* of * ******** Details such as ***** *********** *** ********** ***** **** elements *** ******** Companies ** not ****** **** ** **** ***** *** **** ** *************** ** ****** sensitive ************ *** ***** ****** ************ ** made ** of *** ******** ********** and ******** ****** *** ******** schema ***** *** ********** *** physical storage structure ** the database The ******** ****** ******** *********** **** **** the **** *** specific ***** ** the database **** *** interested in *** ********** ****** ********* *** entire ******** ********* and ********* relationships *** ***** of **** stored *** database ****** represents the ******* view ** * ******** ***** *** ******** ***** ***** *** content ** *** ********** Data ************ ** *** concept **** ********** *** ********** ** generated *** stored data **** ************ **** can *** **** ** computation or ************ ******** ******** data ************ occurs **** *** ************ ** *** physical ****** ****** ******* causing *********** ******** ** be ********* ******* **** ************ ***** **** ************ of the ******* ****** ****** ******* ******* *********** ******** ** be *********** Centralized ******** ** ******** ** ***** ******** *** ********* as **** integrity ** ********** It ** **** for * business ******** ********* *********** **** ******* ***** ********* **************** projects are ****** ********** under a centralized ******** system A ************* ******** ** ******** **** ********** ************ **** might ****** **** ***** ** ** ******** ******* ** *** better ******** to ********** reliability ************ *** ******* ********* are ******** *** a ******** *********** ***** is ****** ****** ****** *** **** interface on *** client ** ****** *** database on *** ****** *** both) ***** for * ** three-tier ************ the *********** ***** or process resides in *** middle-tier it ** separated **** *** **** and *** user ********* * ********** is ****** *** ********* ** ********* ** **** tier can ** developed ** ******* without ********* ***** ******* * non-functional *********** ** * ****** ********* **** **** ** a *********** on * design For ******* ******** reliability and performance ** *** ****** *** ************** ************ are defined ** *** access ********* and *** *************** of *** ********* ******* ERDs include ********** data ***** ******* *** * Logical **** ***** *** ******** *** ** ERD ** * ********** diagram ***** ********** *** ** show ******* ******* ** a ****** Logical model ******* ***** ******** of a ********** ***** *** ***** **** details *** ******** ***** created when ********** ******** ***** is ********** Recursive ************ ****** **** *** ******** ** *** same **** **** * ************ *** ******* **** an ******** ** mandated to ********* other employees16 A ******* notation ** **** ** **** ************** ** an *** It is *** always ***** ** ***** are ***** when * single ****** broken **** into multiple sub-entities *** be **************** ********** for ******* ******* ******** for example *** is a ******** *** animals *** **** ****** **** ***** type ************ ********** * single superclass/subclass ************ **** **** than one ********** *** example a ******* ****** *** ** * ******** ******* ** * *********** Schema-RecordDatabase-set ** ********************************************************* field20 Multiple inheritance *** **** ** * *** ** confusion **** *** base ******* ********* a ****** with *** **** name ** ** also rarely **** as allowing objects ** ****** ******* *** ******** behavior *** *** the integrity ** *** data ****** ********* ** ** ****** ******* ** **** *************** ********* *********** ****** **** *** **** **** ** ******** in ******** locations ** *** database ** leads ** **** ************* ***** to ************ **** ********** *** *********** ******** ** ********* 1 * ****** ** * ****** set ** ****** ********* for ** ********* ** * ***** **** *** **** ******* ** **** *** **** referencing2 ****** *** values **** go to a ******** -Used ** ******** *** values **** ********* ********** **** a ********** primary-It ** a ****** or ***** ** ******* in * table **** ******** ******** ***** *** ** **** tableSecondary-It ** column ** ***** ** columns ** * ***** **** ******** identify ***** *** in **** *************** ** ** * a ********* *** **** ******** ** *** ** **** ********** (table ******** **** ******** uniquely ******** ** ****** occurrenceforeign- It ** * ****** **** ******* a ************ between *** tablescandidate- ** ** * ** * *** ** ********** **** ******** ******** ****** in * ************* for ******* Key selection *** ********** ************** Simplicity ********* *** ************* Referential ********* ** *** ******* ********** ** * ******* *** ** * primary key * **** ********** ** ******* the use ** ******* *** ********* *** ** ****** **** *** ************ ******* two ****** keeps ** **** during *** execution of *** ****** *** ****** instructions25A “Unit ** Work” Refers ** *** *********** ******** ** operations within ** *********** *********


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