DBase

Atom types are defined in the file chem.rul. The atom types for each of the force fields are listed in the files pointed to by the AtomTypeMass entries associated with the specific force fields in the Registry or the chem.ini file. They are usually named typ.txt or typ.dbf, depending on whether text or dBASE format is used. For the AMBER force field, all variations use the same type file, defined in the [Amber] section of the Registry or the chem.ini file. It is usually called ambertyp.txt, if a text format file is used, indicated by FileFormat=Text or ambertyp.dbf, if a dBASE III format file is used, indicated by FileFormat=dbf. 

Compilation of parameters makes HyperChem more efficient. It replaces a set of text or dBASE files (for one parameter set) by a single binary. par file. The compilation can be performed at any time from within HyperChem by selecting the parameter set (Setup/Select Parameter Set) and requesting a compilation (Setup/Compile Parameters). If the parameter files are not modified, you do not have to compile them. 

FileFormat describes whether this file is in text or dBASE format. This is, by convention, available in the file names,. txt or. dbf, but the AtomTypeMass file name is strictly arbitrary and the file is interpreted on the basis of the FileFormat setting. 

A database management system (DBMS) is used by most LIMS systems for storing data. Examples of commercially available DBMS are DB2, DBASE, Informix, INGRES, ORACLE, and RDB. AH of these DBMS conform to the "relational" model developed by Codd (19). Eigure 3 demonstrates the use of a relational DBMS for storing LIMS data. Here data is grouped by type so customer and analysis requests are stored separately from sets of sample information which are, in turn, stored separately from sets of analysis results. Individual records are linked or related by unique identification data. 

System can communicate with other systems (e.g., Lotus, dBASE, ASCII, and DIF data formats Macintosh and IBM equipment). 

SLUDGE MANAGER Resource Conservation Services, Inc. 42 Main Street Yarmouth, ME 04096 (207) 846-3737 Recordkeeping and database management for treatment plants and facilities that produce useful sludge. Requires 312K memory, 5Meg hard disk, and dBase II. 

NPRDS data can be obtained in the form of magnetic tapes or floppy disks that are dBASE III or LOTUS 1-2-3 compatible. 

Failure rate data selected for the CCPS Generic Failure Rate Data Base were handled using dBase III Data Management in conjunction with the Computerized Aggregation of Reliability Parameters (CARP) developed by SAIC. CARP, designed to be used by... 

FAO AQUASTAT Database (1985). http //www.fao.org/ag/agl/aglw/aquastat/dbase/index. stm... 

The first reference material data base was established in 1984. Using what was then state of the arf software [dBASE 3 and Clipper ] the Code of Reference Materials (COMAR), was developed. By the release of the last edition at the beginning of 1999 it contained information on more than 10 000 RMs from over 200 producers in over 20 countries. 

A major objective in developing these risk estimation procedures was to provide a method capable of evaluating hundreds of properties in several communities within the DOE Uranium Mill Tailings Remedial Action Program in a timely manner. Therefore, we chose a calculation scheme that could be performed using commercially available database software (dBASE II, a trademark of Ashton-Tate, Culver City, CA), but that at the same time would be flexible enough that assessments for other contaminants could be readily incorporated. 

It is also salutary to note figure 2, which reminds us that agreement and correctness are not always linked. [This figure is from the on-line dBase of particle properties http //pdg.lbl.gov.] Systematic errors always exist, and may be much larger in amplitude than expected. In general, deducing from uncertain data that a model is acceptable is not useful scientific progress. One learns from the failure of models, not from their successes. 

Based on fits of /cobs vs. [Cu2+]totai data at [methoxide]/[Cu2+]total ratio of 0.5. dBased on NLLSQ fits of /cobs vs. [Zn2+]totai data at [methoxide]/[Zn2+]total ratio of 0.3. 

Site address http//www.ebi.ac.uk/dbases/topdata.btml... 

Microsoft dBase Driver f. dbf) Microsoft dBase VFP Driver f. dbf) Microsoft Access Driver f.mdb) Microsoft Access Driver f.mdb) Microsoft Access Oriverf.mdb) Microsoft Excel Driver f xls)... 

Oslo-Paris (OSPAR) Commission (2004) Musk Xylene and Other Musks. Hazardous Substances Series, No. 200, OSPAR Secretariat, London http //www.ospar. org / documents / dbase/publications / p00200 BD%20on%20musk%20xylene. pdf (last accessed 27 September 2011). 

To export data files into a database program, a database file format called. DB2 was developed in an early PC database, dBase II. Databases are made up of files, which could be compared to a Rolodex file box full of cards, all containing the same type of information. The Rolodex card would be equivalent to a database record. Each record has on it a series of entries, fields, in the same place on each card. To import data into a database record, all the entries in the report must be matched up with existing fields in the database s format. Most software that uses database formats has export/import subprograms that allow you to align fields between the two formats and allow you to select various ways of determining coding for end-of-file and end-of-record terminators. 

As an illustration, we will construct a database about atomic absorption using dBASE III PLUS. There are many database programs available for microcomputers, but the most popular are certainly dBASE II and the more recent dBASE III PLUS and dBASE IV versions. All are products from Ashton Tate (ref. 1). The data we want to bring into a table are the recommended data for graphite furnace analysis from the Perkin-Elmer manual (ref. 2). Table 2.1 shows the data for one element as they are present in the manual. 

It is the purpose to put the data for all the elements in the manual in a computerized database so that one can retrieve information from them in a simple manner. In what follows we will try to give an idea of how one constructs such a database, without giving complete instructions on how exactly to proceed, nor will we discuss all the possibilities of dBASE III PLUS. For such details we refer to the manual. 

The first stage of the implementation of any database is to create a master file containing all data. This requires the command create, entering of a file name (here FLAMELESS), and the specification of the record structure (format of the record). When working with the dBASE program this would mean the following sequence ... 

DELETE delete records these records can be identified by number or by content. For instance, if for some reason, one wants to delete all records that refer to tubes using pyrolytic graphite, one would type in delete for tube = pyro . dBASE does not immediately delete them completely they can still be recalled in this stage. A pack command is required for permanent deletion. 

Another option of dBASE is that one can sort the.contents of a database file. This means that, depending on the type of the field you w ant to sort on, a new database file is created in which the records are reordered in an alphabetical, chronological... 

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