04CM20145Lecture9 - Department of Computer Science
... read/written magnetically. Primary medium for the long-term storage of data; typically stores entire database. Data must be moved from disk to main memory for access, and written back for storage. Much slower access than main memory, but ...
... read/written magnetically. Primary medium for the long-term storage of data; typically stores entire database. Data must be moved from disk to main memory for access, and written back for storage. Much slower access than main memory, but ...
SQL Tutorial - Computer Science
... To obtain the value when duplicates are removed, insert the keyword distinct before attribute name: avg(distinct attribute) ...
... To obtain the value when duplicates are removed, insert the keyword distinct before attribute name: avg(distinct attribute) ...
SCHEME OF INSTRUCTION & EXAMINATION
... Simple to Complex condition query creation using SQL Plus. Usage of Triggers and Stored Procedures. Creation of Forms for Student information, Library information, Pay roll etc. Writing PL/SQL procedures for data validation. Report generation using SQL reports. Creating password and security feature ...
... Simple to Complex condition query creation using SQL Plus. Usage of Triggers and Stored Procedures. Creation of Forms for Student information, Library information, Pay roll etc. Writing PL/SQL procedures for data validation. Report generation using SQL reports. Creating password and security feature ...
Archiving Relational Databases with SIARD Suite
... Relational Databases: a Brief Introduction Databases, the basics Database history, the way to the relational model The relational model ...
... Relational Databases: a Brief Introduction Databases, the basics Database history, the way to the relational model The relational model ...
Creating A Back-Up & Recovery Plan
... point where the database finishes. Backs up all tables, indexes, system tables and the database object in those tables ...
... point where the database finishes. Backs up all tables, indexes, system tables and the database object in those tables ...
Introduction to MySQL RDBMS
... A database is a software program which allows for storage and retrieval of information on a computer hard drive’s file system or other device. A relational database is a database that allows for queries which typically use Structured Query Language (SQL) to store and retrieve data. Relational databa ...
... A database is a software program which allows for storage and retrieval of information on a computer hard drive’s file system or other device. A relational database is a database that allows for queries which typically use Structured Query Language (SQL) to store and retrieve data. Relational databa ...
A Closer Look
... • An interleaved schedule of transactions is isolated if its effect is the same as if the transactions had executed serially in some order (serializable) T1: r(x) w(x) T2: r(y) w(y) • It follows that serializable schedules are always correct (for any application) • Serializable is better than serial ...
... • An interleaved schedule of transactions is isolated if its effect is the same as if the transactions had executed serially in some order (serializable) T1: r(x) w(x) T2: r(y) w(y) • It follows that serializable schedules are always correct (for any application) • Serializable is better than serial ...
Introduction to Database Systems
... of structural information about the data from the programs that manipulate and use the data i.e. the immunity of application programs to changes in the storage structure and access strategy ...
... of structural information about the data from the programs that manipulate and use the data i.e. the immunity of application programs to changes in the storage structure and access strategy ...
1/16 Overview - Andrew.cmu.edu
... Non-loss changes to the logical structure can be made without changing application programs or end-user views Examples Change format of a field (zip from 5 to 9) Add a new data field Add a new table Divide a table into two ...
... Non-loss changes to the logical structure can be made without changing application programs or end-user views Examples Change format of a field (zip from 5 to 9) Add a new data field Add a new table Divide a table into two ...
InfiniteGraph
... Locations of those database files are added to the system database file. The schema definitions for the elements are also added to the system database file. Moving forward, additional instances of that type have access to the schema. Each new persistent element that is added to the graph is given a ...
... Locations of those database files are added to the system database file. The schema definitions for the elements are also added to the system database file. Moving forward, additional instances of that type have access to the schema. Each new persistent element that is added to the graph is given a ...
Logical Modeling in Microsoft Visio
... connect the arrow head to the primary key side (i.e. the one side of the relationship) and the tail to the foreign key side (i.e. the many side of the relationship). For example, since a department employs many employees, the arrow should point towards the departments table like this: ...
... connect the arrow head to the primary key side (i.e. the one side of the relationship) and the tail to the foreign key side (i.e. the many side of the relationship). For example, since a department employs many employees, the arrow should point towards the departments table like this: ...
MCA 304 DATABASE MANAGEMENT SYSTEMS
... Overview, A Historical Perspective, Files System versus DBMS, Advantages of DBMS, Describing and storing data in a DBMS Transaction management, Structure of a DBMS, People who work with Databases, Overview of Database Design. Entities, Attributes and Entity Sets, Relationships and Relationship sets, ...
... Overview, A Historical Perspective, Files System versus DBMS, Advantages of DBMS, Describing and storing data in a DBMS Transaction management, Structure of a DBMS, People who work with Databases, Overview of Database Design. Entities, Attributes and Entity Sets, Relationships and Relationship sets, ...
Steps for Successful Implementation Using SQL
... Field names, and sizes for all fields in the design are determined by Data Administration, according to H-Net standards. iii.) Database Security and user access is planned and designed. iv.) Long term data storage and backup requirements are given to DBA by developer. v.) Importing or Exporting of D ...
... Field names, and sizes for all fields in the design are determined by Data Administration, according to H-Net standards. iii.) Database Security and user access is planned and designed. iv.) Long term data storage and backup requirements are given to DBA by developer. v.) Importing or Exporting of D ...
Biological Databases
... Researchers create and use the data Use of known information for analyzing new data New data needs to be screened Structural/Functional information Extends the knowledge and information on a higher level than DNA or protein sequences ...
... Researchers create and use the data Use of known information for analyzing new data New data needs to be screened Structural/Functional information Extends the knowledge and information on a higher level than DNA or protein sequences ...
UML Data Modeling Profile
... Database is the collection of data organized in a way to be easily stored and retrieved using programs. A database includes the methods to store and retrieve the information. The information and the requirement on organizing the information are different for different types of the application. Howev ...
... Database is the collection of data organized in a way to be easily stored and retrieved using programs. A database includes the methods to store and retrieve the information. The information and the requirement on organizing the information are different for different types of the application. Howev ...
Configuration_Options_and_Trace_Flag_Secrets
... • T806 enables DBCC audit checks to be performed on pages to test for logical consistency problems. o These checks try to detect when a read operation from a disk does not experience any errors but the read operation returns data that is not valid. o Pages will be audited every time that they are re ...
... • T806 enables DBCC audit checks to be performed on pages to test for logical consistency problems. o These checks try to detect when a read operation from a disk does not experience any errors but the read operation returns data that is not valid. o Pages will be audited every time that they are re ...
MS SQL SERVER 7.0
... Query engine has been redesigned to better handle complicated queries required by Decision Support System (DSS) . Improved query support for the new Micro Soft OLAP services. New Data Transformation Services (DTS) to facilitate transfer of data between SQL server and other databases…... ...
... Query engine has been redesigned to better handle complicated queries required by Decision Support System (DSS) . Improved query support for the new Micro Soft OLAP services. New Data Transformation Services (DTS) to facilitate transfer of data between SQL server and other databases…... ...
2. Data (horizontal) - NDSU Computer Science
... How these entities are stored and how they are viewed or known to users may differ. They may be known to the users in various logical variations. A logical record based on the physical employee record: | Jones | John |Fargo| ND| So we also have LOGICAL FIELD = smallest unit of logical data LOGICAL R ...
... How these entities are stored and how they are viewed or known to users may differ. They may be known to the users in various logical variations. A logical record based on the physical employee record: | Jones | John |Fargo| ND| So we also have LOGICAL FIELD = smallest unit of logical data LOGICAL R ...
MIS 2502 Access 2007 Tutorial
... Format confirms the data in the field to the same format when it is entered into the datasheet. For text and memo fields, this property has two parts that are separated by a semicolon. The first part of the property is used to apply to the field and the second applies to empty fields. ...
... Format confirms the data in the field to the same format when it is entered into the datasheet. For text and memo fields, this property has two parts that are separated by a semicolon. The first part of the property is used to apply to the field and the second applies to empty fields. ...
Transaction Management - USA School of Computing
... Atomic – All or Nothing All parts of the transaction must be completed and committed or it must be aborted and rolled back Consistent Each user is responsible to ensure that their transaction (if executed by itself) would leave the database in a consistent state ...
... Atomic – All or Nothing All parts of the transaction must be completed and committed or it must be aborted and rolled back Consistent Each user is responsible to ensure that their transaction (if executed by itself) would leave the database in a consistent state ...