SPECIALIST THE DataBase

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(1)M. DtB. 7. 0. Í7. 7. ". ° ,. S. THE Data Base SPECIALIST Ru;" ""2"""" a ·i, -'tzr&S É" . YE '2/ k '.' ',.,' " -' '. 'lR¿EN:, uu"" ·" j "jEü E ![!".':i'!:'"i%|ik'g'g'!q-¿S:'3L'i}rf%:, ":. i. '. '. I' HDBS. Jn. ' g. FEATURES. :. '. b. ·. FIXED LENGTH RECORDS. FEATURES. HIERARCHICAL AND FULL NETWORK DATA STRUCTURES(C0DASYL ORIENTED). READNVRITE PROTECTION AT FILE LEVEL. " FIXED AND VARIABLE LENGTH RECORDS. ONE-TO-MANY SET RELATIONSHIPS ALLOWED. " MULTIPLE LEVELS OF READNVRITE PROTECTION ATITEM,REC0RD,SETAND FILE LEVELS. FEATURES STRAIGHT SORTED,. FORWARD. USE OF ISAM-LIKE. TO ADD, DELETE,. NAMES OF DATA. UPDATE,. ROUTINES WRITTEN. ARE CALLABLE IN MACHINE. SUPPORTS DATA. IN A NUMBER. EXPLICIT REPRESENTATION OF ONE-TO-ONE, ONET0-MANY,MANY-TO-ONE AND MANY-TO-MANY SETS. ·. OCCURRENCESOF A RECORDTYPEMAY OWN OTHER OCCURRENCESOF THE SAME RECORDTYPE. ·. ASINGLESETMAY HAVEMULTIPLE MEMBER RECORD TYPES. OWNER AND. MOBS. THE DATA. BASE. USER DEFINABLE. OF SORTED ORDERS. FROM BASIC, PASCAL,. LANGUAGE. and. ·. PROVIDED. SEARCH AND TRAVERSE. ITEMS, RECORDS, SETS AND FILES ARE WHOLLY. RECORDS CAN BE MAINTAINED. TO HOBS. MDBS. IN. STRUCTURES. FIFO, LIFO, NEXT AND PRIOR SETORDERING. COMMANDS. COMMON. 0. t. ADDITIONAL. HIERARCHICAL DATA STRUCTURES. · · · ·. P · '. '. FORTRAN,. FOR MAXIMAL. BASE SPREAD OVER SEVERAL. COBOL OR MACHINE. EXECUTION DISK DRIVES. EFFICIENCY. LANGUAGE. AND MINIMAL. MEMORY. USAGE. (MAX. 8) DISKS MAY BE MINI OR FULL SIZED. FLOPPIES OR HARD. DISKS. Also UP TO 254 RECORD-TYPES EACH RECORD-TYPE EACH ITEM-TYPE. MAY BE DEFINED. MAY CONTAIN. IN THE DATA. BASE. UP TO 255 ITEM-TYPES. MAY BE UP TO 9,999 BYTES IN LENGTH. REQUIREMENTS ·Z-80APPROXIMATELY. 16K MEMORY. · 8080 APPROXIMATELY ·IN ADDITION TO THE. 20K. USER'SPROGRAM. MEMORY-. OPERATING AND. SOME. -. SYSTEM, BUFFER. HOST. LANGUAGE,. MOBS. MDBS PACKAGES INCLUDE. ITEM,. USERS. MANUAL. with. extensive. documentation. of the Data Base Management. OMS DATA MANAGEMENT ROUTINES. These are the routines callable from the host etc.) which perform the data base operations of finding, adding, language (BASIC, COBOL, , and deleting records; fetching and storing data items; and traversing the (p=ib|y complex) data structure. .. SAMPLE. APPLICATION. RELOCATOR "'. SYSTEM HDBS. TO RE-ORG ALL. SPECIFIC. MANUAL. to show. $550. 'BO V'RS'ON. $750 $825. MDBS · DRS ONLY. on your. compute,. $ 35. ALLOWS. BASE. AFTER. THE. USER. TO. IT IS ALREADY. ON-LINE. THIS. FEATURE. MOBS. SYSTEM.. CAN. ONLY. BE ADDED. TO. THE. .. RUNS ·CP/M". WITH. UNDER. MICROSOFT. = W. "OTHER. LANGUAGE FORMS. BASIC,. COBOL. AND. MICRO. CONTACT. DATA. P.O.BOX. BASE. $100 5. FORMS. 248. SYSTEMS,. LAFAYETTE,. IN. MOBS.. CALLABLE $ 75. CALLABLE. IN DEVELOPMENT. (317). $. THIS. TO. AN EXISTING. WEACCEPT. FOR FREE PRIMER. ONLY. MACHINE LANGUAGE FORMS ADD. MANUAL. up our software. to bring. TO MDBS. VERSION. A DATA. ·MACHINE. $ 35. ONLY. - 8080. MANUAL. how. BASE.. DATA. SET TYPES. FROM. FORTRAN. $250 $325. Z8O VERSION VERSION. UPGRADE. AND DDL FILES. ROUTINES. - 8080. MANUAL. MD". PROGRAM. AND/OR. RECORD. TO OR DELETED. RE-DESIGN. DDL DATA DEFINITION LANGUAGE ANALYZER/EDITOR. The user specifies data strucLanguage (DDLl. The Data Definition Language tures to be used in a Concise Data Definition Analyzer/Editor allows the user to interactively DDL Specifications edit and to and create initialize the data base for use based on these specif ications. zj60 PAGE System.. FEATURES. MDBS·DRS BE ADDED. and. SYSTEM. AREA ALLOWS. HDBS. DYNAMIC. NEW. RESTRUCTURING. ADD S2.50 ($5.00 IF FOREIGN) TO NON-CASH ORDERS FOR HANDLING AND SHIPPING. INDIANA RESIDENTS ADD 4%.. CP/MN e. ~~. 47902. 742-7388. tr+rrb0rk OfD©[0| Rch. Corp.. INC.

(2) m. 4'. '. '. s. ' 0. ; 0. :. ". ". " · 0. .. :. D. The THEROETICAL. LIMITS. 0 A Data Record May. Be. on. Up. the. size. of. a. MDBS or HDBS data. base. .. D. .. :. are:. To 65521 Bytes Long.. THEORETICAL LIMITS 0 A Data Item (Field) In A Record May Be Up To 9999 Bytes Long. An Item Up To 9999 Times (But Note May Be Treated As A Vector Which Repeats Is 65521). That The Maximum Length Items May. Be. Defined In A. Up. To 255. Up. To 254 Different Record Types May. Data. Given. Data. SUGGESTED PRACTICAL LIMITS. Record.. SYSTEM OVERHEAD Be. Defined In The. Data. Base.. A 32 Bit Address Space Is Used For Disk Resident Data, Implying A Maximum Data Base Size Of Over4.2 Billion Bytes.. T. SUGGESTED. PRACTICAL. LIMITS. (due to non-. restnctions. %. 0. A DATA RECORD ISTYPICALLY. nE. d. A DATA ITEM. ". UP. ·. UPTO 8 ON-LINE DISK DRIVES,EACH MEGABYTES.. °. THE LIMIT ON THE NUMBER OF OCCURRENCES BY THE AMOUNT OF AVAILABLE DISK SPACE.. .. '. u. ri 13. IS. TYPICALLY. TO 255 DATA ITEMS. PER. LESS. LESSTHAN. LlñQQ. — sue. as. THAN 4000 BYTES LONG, ALSO.. RECORD AND 254 RECORD TYPES OF. SYSTEM. WHICH ARE TYPICALLY. OF. DATA BASE.. PER. LIMITED TO 32. A DATA RECORD. S a nd. HDBS. LIMITED. ONLY. The Amount Of Disk Space Required For Pointers And System Information Varies Depending the Application. A Rough Approximation Of The Amount Of Disk Space Required, In Bytes, Can Be Roughly Estimated For Each Type Of Data Record In The Data Base By The Following Formula:. Where NRO = expected number of occurrences of the record type. DL = number of bytes required to hold the. MDBS. IS. OV ERHEAD. NRO*(5+DL+8*NS). FI. are:. BYTES LONG.. On. E. memory. NS = the number of set relationships (owner or member). in. data. for this record.. which this record. is a. participant.

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