Data Management MM
... An indexed sequential file can only be stored on a random access device e.g. magnetic disc or CD. This is because we need a device that will allow us direct access to random files, rather than the sequential access that magnetic tape allows. ...
... An indexed sequential file can only be stored on a random access device e.g. magnetic disc or CD. This is because we need a device that will allow us direct access to random files, rather than the sequential access that magnetic tape allows. ...
FILE ORGANIZATION
... An indexed sequential file can only be stored on a random access device e.g. magnetic disc or CD. This is because we need a device that will allow us direct access to random files, rather than the sequential access that magnetic tape allows. ...
... An indexed sequential file can only be stored on a random access device e.g. magnetic disc or CD. This is because we need a device that will allow us direct access to random files, rather than the sequential access that magnetic tape allows. ...
Data hierarchy in Oracle
... • Try to match the max capacity of your storage device to limit I/O operations – eg: minimal read size of OS (64K?) ...
... • Try to match the max capacity of your storage device to limit I/O operations – eg: minimal read size of OS (64K?) ...
Supporting Activity Database Recovery Process Suppose that the
... Recovery restores a database from a given state, usually inconsistent, to a previously consistent state. Depending on the type and the extent of the failure, the recovery process ranges from a minor short-term inconvenience to a major long-term rebuild action. Regardless of the extent of the require ...
... Recovery restores a database from a given state, usually inconsistent, to a previously consistent state. Depending on the type and the extent of the failure, the recovery process ranges from a minor short-term inconvenience to a major long-term rebuild action. Regardless of the extent of the require ...
- KV No 1 GCF Jabalpur
... Null Values. (Monthly Test 4) Distribution of Project to groups Monthly Test 4) Oct. 2016 ...
... Null Values. (Monthly Test 4) Distribution of Project to groups Monthly Test 4) Oct. 2016 ...
What is a Database Management System?
... Use on larger tables. Index the primary key of each table. Index search fields. Fields in ORDER BY and GROUP BY commands. • When there are >100 values but not when there are <30 values. Database Management COP4540, SCS, FIU ...
... Use on larger tables. Index the primary key of each table. Index search fields. Fields in ORDER BY and GROUP BY commands. • When there are >100 values but not when there are <30 values. Database Management COP4540, SCS, FIU ...
Running GBrowse and DAS/1 on GUS
... • Flexible with database schema – GUS, Chado • Support complex data type, e.g. synteny, protein data Cons: • Relatively slow – database tuning + bulkSubfeatures • Familiar with SQL ...
... • Flexible with database schema – GUS, Chado • Support complex data type, e.g. synteny, protein data Cons: • Relatively slow – database tuning + bulkSubfeatures • Familiar with SQL ...
Final Exam Study Guide Know what SQL stands for Know what
... Restrict access to the data such that a user can see and (sometimes) modify exactly what they need and no more. Summarize data from various tables which can be used to generate reports. ...
... Restrict access to the data such that a user can see and (sometimes) modify exactly what they need and no more. Summarize data from various tables which can be used to generate reports. ...
slides01
... Efficient data management (faster than files) Large amount of data High reliability Information sharing (multiple users) DBMS Users: – E-commerce companies, banks, airlines, transportation companies, corporate databases, government agencies, … – Anyone you can think of! ...
... Efficient data management (faster than files) Large amount of data High reliability Information sharing (multiple users) DBMS Users: – E-commerce companies, banks, airlines, transportation companies, corporate databases, government agencies, … – Anyone you can think of! ...
PPT Visuals Template
... All values in the foreign key field have an entry in the primary key table ...
... All values in the foreign key field have an entry in the primary key table ...
Backup tables ppt
... 2.Click Next on the “SQL Server Import and Export Wizard” window if it comes up. Then click Next on the “Choose a Data Source” window ...
... 2.Click Next on the “SQL Server Import and Export Wizard” window if it comes up. Then click Next on the “Choose a Data Source” window ...
Transaction Management (cont.)
... • Need to redo updates of committed transactions following a failure. • May need to undo effects of transactions that had not committed at time of failure. • Essential that log records are written before write to database. Write-ahead ...
... • Need to redo updates of committed transactions following a failure. • May need to undo effects of transactions that had not committed at time of failure. • Essential that log records are written before write to database. Write-ahead ...
South NM Land Links Project - New Mexico State University
... – wanted land: acreage, previous land-use (vegetables, herbs, orchard, beekeeping, organic, pesticide use…), payment/exchange – Other… appropriate associative tables ...
... – wanted land: acreage, previous land-use (vegetables, herbs, orchard, beekeeping, organic, pesticide use…), payment/exchange – Other… appropriate associative tables ...
a sample - Educational Computing Services
... Indexes may also be created on other fields of a student’s record, e.g. surname, address. However, since some fields such as the surname are unlikely to be unique, the entries in the index may reference more than one location, just like the entries in the index for this book. An index on a unique fi ...
... Indexes may also be created on other fields of a student’s record, e.g. surname, address. However, since some fields such as the surname are unlikely to be unique, the entries in the index may reference more than one location, just like the entries in the index for this book. An index on a unique fi ...
02_IntroAccess&DM
... Consider the type of data you are entering to determine what the data type and size should be. Make sure when you setup foreign keys that they are the same type/size as the primary ...
... Consider the type of data you are entering to determine what the data type and size should be. Make sure when you setup foreign keys that they are the same type/size as the primary ...
Status - UTRGV Faculty Web
... or, if it does not complete, it has no effect at all (aborts). – This is not true of ordinary programs. A hardware or software failure could leave files partially updated. ...
... or, if it does not complete, it has no effect at all (aborts). – This is not true of ordinary programs. A hardware or software failure could leave files partially updated. ...
Data Warehouse Improvements
... star) • Implement a Date Table (use INT key in YYYYMMDD format) – Fact.MyDate BETWEEN 20000000 AND 20009999 – Fact.MyDate BETWEEN ‘2000-01-01’ and ‘2000-12-31’ – YEAR(Fact.MyDate ) = 2000 ...
... star) • Implement a Date Table (use INT key in YYYYMMDD format) – Fact.MyDate BETWEEN 20000000 AND 20009999 – Fact.MyDate BETWEEN ‘2000-01-01’ and ‘2000-12-31’ – YEAR(Fact.MyDate ) = 2000 ...
syllabus template - Cumberland County College
... in oral reports the ideas or exact words of someone else without proper documentation. Whether the act of plagiarism is deliberate or accidental [ignorance of the proper rules for handling material is no excuse], plagiarism is, indeed, a “criminal” offense. As such, a plagiarized paper or report aut ...
... in oral reports the ideas or exact words of someone else without proper documentation. Whether the act of plagiarism is deliberate or accidental [ignorance of the proper rules for handling material is no excuse], plagiarism is, indeed, a “criminal” offense. As such, a plagiarized paper or report aut ...
Chapter 2
... Candidate key selected to identify records uniquely within table. Candidate keys that are not selected to be primary key. ...
... Candidate key selected to identify records uniquely within table. Candidate keys that are not selected to be primary key. ...
Chapter 1 ACCESS (Part One)
... • An Organized collection of related information • Table – Vertical columns & horizontal rows where information is stored • Record – A row – Information about one person or thing • Field – A column – Smallest unit of information with Microsoft® Access 2010 ...
... • An Organized collection of related information • Table – Vertical columns & horizontal rows where information is stored • Record – A row – Information about one person or thing • Field – A column – Smallest unit of information with Microsoft® Access 2010 ...
MIS 485 Week 1 - University of Dayton
... – A named portion of secondary memory allocated for the purpose of storing physical records ...
... – A named portion of secondary memory allocated for the purpose of storing physical records ...